ASTM D3296-14a(2019)

Standard Specification for FEP-Fluorocarbon Tube

ABSTRACT
This specification covers the tubing that is intended for electrical, mechanical, chemical and medical applications manufactured from extrusion resins made from the copolymer of tetrafluoroethylene and hexafluoropropylene. Three types of FEP-fluorocarbon tubing are classified which are differentiated by size schedules: Type I which is tubing based upon the American wire gage, Type II which is tubing based upon fractional inch sizes, and Type III which is tubing of all other sizes. Tubings are further differentiated in accordance to its increasing wall thicknesses in classes which are Class A, Class C, Class D, and Class E. Several properties of tubing such as inside diameter, wall thickness, specific gravity, tensile strength, elongation, dielectric breakdown voltage, dimensional stability, and heat resistance shall be determined by subjecting it to different test methods.
SCOPE
1.1 The tubing is intended for electrical, mechanical, chemical, and medical applications manufactured from extrusion resins made from the copolymer of tetrafluoroethylene and hexafluoropropylene (FEP-fluorocarbon). This specification is for virgin material only and does not address recycled material as it is not appropriate for FEP tubing.  
Note 1: Abbreviations are in accordance with Terminology D1600.
Note 2: There is no known ISO eqivalent to this standard.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 The following safety hazards caveat pertains only to the test methods portion, Section 8, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 30-Apr-2019
• ICS: 23.040.20 - Plastics pipes
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.15 - Thermoplastic Materials

Relations

• Replaced By: ASTM D3296-24 - Standard Specification for FEP Resin Tube
• Effective Date: 01-Apr-2024
• Refers: ASTM D883-24 - Standard Terminology Relating to Plastics
• Effective Date: 01-Feb-2024
• Refers: ASTM D883-23 - Standard Terminology Relating to Plastics
• Effective Date: 01-Nov-2023
• Refers: ASTM D149-20 - Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies
• Effective Date: 01-Jan-2020
• Refers: ASTM D883-20 - Standard Terminology Relating to Plastics
• Effective Date: 01-Jan-2020
• Refers: ASTM D883-19c - Standard Terminology Relating to Plastics
• Effective Date: 01-Aug-2019
• Refers: ASTM D883-19a - Standard Terminology Relating to Plastics
• Effective Date: 15-Apr-2019
• Refers: ASTM D883-19 - Standard Terminology Relating to Plastics
• Effective Date: 01-Feb-2019
• Refers: ASTM D883-18a - Standard Terminology Relating to Plastics
• Effective Date: 01-Dec-2018
• Refers: ASTM D883-18 - Standard Terminology Relating to Plastics
• Effective Date: 01-Nov-2018
• Refers: ASTM D1675-18 - Standard Test Methods for Polytetrafluoroethylene Tubing
• Effective Date: 01-May-2018
• Refers: ASTM D1600-18 - Standard Terminology for Abbreviated Terms Relating to Plastics (Withdrawn 2024)
• Effective Date: 01-Jan-2018
• Refers: ASTM D883-17 - Standard Terminology Relating to Plastics
• Effective Date: 15-Aug-2017
• Refers: ASTM D1600-14 - Standard Terminology for Abbreviated Terms Relating to Plastics
• Effective Date: 01-Feb-2014
• Refers: ASTM D1600-13 - Standard Terminology for Abbreviated Terms Relating to Plastics
• Effective Date: 15-Apr-2013

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D3296 − 14a (Reapproved 2019)
Standard Specification for
FEP-Fluorocarbon Tube
This standard is issued under the fixed designation D3296; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope tive Density) of Plastics by Displacement
D883 Terminology Relating to Plastics
1.1 The tubing is intended for electrical, mechanical,
D1600 Terminology for Abbreviated Terms Relating to Plas-
chemical, and medical applications manufactured from extru-
tics
sion resins made from the copolymer of tetrafluoroethylene and
D1675 Test Methods for Polytetrafluoroethylene Tubing
hexafluoropropylene (FEP-fluorocarbon). This specification is
D2116 Specification for FEP Resin Molding and Extrusion
for virgin material only and does not address recycled material
Materials
as it is not appropriate for FEP tubing.
IEEE/ASTM SI 10 American National Standard for Use of
NOTE 1—Abbreviations are in accordance with Terminology D1600.
the International System of Units (SI): The Modern Metric
NOTE 2—There is no known ISO eqivalent to this standard.
System
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
3. Terminology
only.
3.1 Definitions—Definitions of terms used in this specifica-
1.3 The following safety hazards caveat pertains only to the
tion shall be in accordance with Terminology D883.
test methods portion, Section 8, of this specification: This
3.2 Definitions of Terms Specific to This Standard:
standard does not purport to address all of the safety concerns,
3.2.1 lot, n—one production run or uniform blend of two or
if any, associated with its use. It is the responsibility of the user
more production runs.
of this standard to establish appropriate safety, health, and
environmental practices and determine the applicability of
4. Classification
regulatory limitations prior to use.
1.4 This international standard was developed in accor-
4.1 This specification provides for three types of FEP-
dance with internationally recognized principles on standard-
fluorocarbon tubing differentiated by size schedules as follows:
ization established in the Decision on Principles for the
4.1.1 Type I—Tubing based upon the American Wire Gage
Development of International Standards, Guides and Recom-
(AWG) sizes.
mendations issued by the World Trade Organization Technical
4.1.2 Type II—Tubing based upon fractional inch sizes (see
Barriers to Trade (TBT) Committee.
Note 2).
4.1.3 Type III—Tubing of all other sizes, as agreed by buyer
2. Referenced Documents
and seller. This type shall conform to the Dimensional Toler-
2.1 ASTM Standards:
ances for FEP Tubing, as listed inTable 3.
D149 Test Method for Dielectric Breakdown Voltage and
4.2 The types are further differentiated in accordance with
Dielectric Strength of Solid Electrical Insulating Materials
increasing wall thicknesses as follows:
at Commercial Power Frequencies
4.2.1 Class A—Tubing having walls tabulated in Table 1
D618 Practice for Conditioning Plastics for Testing
listed as light-weight wall.
D792 Test Methods for Density and Specific Gravity (Rela-
4.2.2 Class C—Tubing having walls tabulated in Table 1
listed as standard wall (see Note 3).
1 4.2.3 Class D—Tubing having walls tabulated in Table 2
This specification is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic listed as chemical tubing.
Materials (Section 20.15.12).
4.2.4 Class E—Tubing having walls listed as heavy or
Current edition approved May 1, 2019. Published May 2019. Originally
conforming to the Dimensional Tolerances for FEP Tubing as
approved in 1974. Last previous edition approved in 2014 as D3296 - 14a. DOI:
listed in Table 3.
10.1520/D3296-14AR19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE 3—Tubing having electrical internal diameters and wall thickness
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
dimensions were deleted because of lack of demand.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. NOTE 4—Class B has been deleted because of lack of demand.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3296 − 14a (2019)
TABLE 1 Dimensions and Tolerances for Type I FEP-Fluorocarbon Tubing—Dimensions, mm (in.)
Wall Thickness
Inside Diameter Class A Class C
AWG Size
Lightweight Wall Standard Wall
min max nom min max nom min max
24 0.51 (0.020) 0.69 (0.027) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.305 (0.012) 0.254 (0.010) 0.356 (0.014)
22 0.64 (0.025) 0.81 (0.032) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.305 (0.012) 0.254 (0.010) 0.356 (0.014)
20 0.81 (0.032) 1.02 (0.040) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
19 0.91 (0.036) 1.12 (0.044) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
18 1.02 (0.040) 1.25 (0.049) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
17 1.14 (0.045) 1.37 (0.054) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
16 1.30 (0.051) 1.55 (0.061) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
15 1.45 (0.057) 1.70 (0.067) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
14 1.63 (0.064) 1.88 (0.074) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
13 1.83 (0.072) 2.08 (0.082) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
12 2.06 (0.081) 2.31 (0.091) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
11 2.31 (0.091) 2.57 (0.101) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
10 2.59 (0.102) 2.85 (0.112) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
9 2.90 (0.114) 3.15 (0.124) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
8 3.28 (0.129) 3.58 (0.141) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
7 3.66 (0.144) 4.01 (0.158) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
6 4.12 (0.162) 4.52 (0.178) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
5 4.62 (0.182) 5.03 (0.198) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
4 5.18 (0.204) 5.69 (0.224) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
3 5.82 (0.229) 6.33 (0.249) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
2 6.55 (0.258) 7.06 (0.278) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
1 7.34 (0.289) 7.90 (0.311) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
0 8.26 (0.325) 8.81 (0.347) 0.305 (0.012) 0.229 (0.009) 0.381 (0.015) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
TABLE 2 Dimensions and Tolerances for Type II FEP-Fluorocarbon Tubing—Dimensions, mm (in.)
Class D Class D
ID Size Fractions Inside Diameter Wall Dimensions
nom max min Thickness Tolerances
0.79 ( ⁄32) 0.79 (0.031) 0.89 (0.035) 0.69 (0.027) 0.41 (0.016) ±0.076 (±0.003)
1.59 ( ⁄16) 1.59 (0.062) 1.70 (0.067) 1.45 (0.057) 0.76 (0.030) ±0.127 (±0.005)
2.38 ( ⁄32) 2.38 (0.094) 2.51 (0.099) 2.26 (0.089) 0.76 (0.030) ±0.127 (±0.005)
3.18 ( ⁄8) 3.18 (0.125) 3.30 (0.130) 3.05 (0.120) 0.76 (0.030) ±0.127 (±0.005)
4.76 ( ⁄16) 4.76 (0.188) 4.90 (0.193) 4.65 (0.183) 0.76 (0.030) ±0.127 (±0.005)
6.35 ( ⁄4) 6.35 (0.250) 6.53 (0.257) 6.17 (0.243) 0.76 (0.030) ±0.127 (±0.005)
7.94 ( ⁄16) 7.94 (0.312) 8.13 (0.320) 7.72 (0.304) 0.76 (0.030) ±0.127 (±0.005)
9.52 ( ⁄8) 9.52 (0.375) 9.73 (0.383) 9.32 (0.367) 0.76 (0.030) ±0.127 (±0.005)
11.11 ( ⁄16) 11.11 (0.438) 11.38 (0.448) 10.87 (0.428) 0.76 (0.030) ±0.152 (±0.006)
12.70 ( ⁄2) 12.70 (0.500) 12.95 (0.510) 12.45 (0.490) 0.76 (0.030) ±0.152 (±0.006)
14.29 ( ⁄16) 14.29 (0.563) 14.58 (0.574) 14.02 (0.552) 0.76 (0.030) ±0.152 (±0.006)
15.88 ( ⁄8) 15.88 (0.625) 16.18 (0.637) 15.57 (0.613) 0.76 (0.030) ±0.152 (±0.006)
17.46 ( ⁄16) 17.46 (0.688) 17.78 (0.700) 17.17 (0.676) 0.81 (0.032) ±0.152 (±0.006)
19.05 ( ⁄4) 19.05 (0.750) 19.41 (0.764) 18.69 (0.736) 1.02 (0.040) ±0.178 (±0.007)
22.23 ( ⁄8) 22.23 (0.875) 22.63 (0.891) 21.82 (0.859) 1.14 (0.045) ±0.178 (±0.007)
25.40 (1) 25.40 (1.000) 25.91 (1.020) 24.89 (0.980) 1.27 (0.050) ±0.203 (±0.008)
31.75 (1 ⁄4) 31.75 (1.250) 32.26 (1.270) 31.24 (1.230) 1.27 (0.050) ±0.203 (±0.008)
38.10 (1 ⁄2) 38.10 (1.500) 38.74 (1.525) 37.47 (1.475) 1.27 (0.050) ±0.203 (±0.008)
50.80 (2) 50.80 (2.000) 51.44 (2.025) 50.17 (1.975) 1.27 (0.050) ±0.203 (±0.008)
4.3 A one-line system is used to specify materials in this For this example, the line callout would be Specification
specification. The system uses predefined ce
...

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D3296 − 14a (Reapproved 2019)
Standard Specification for
FEP-Fluorocarbon Tube
This standard is issued under the fixed designation D3296; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope tive Density) of Plastics by Displacement
D883 Terminology Relating to Plastics
1.1 The tubing is intended for electrical, mechanical,
D1600 Terminology for Abbreviated Terms Relating to Plas-
chemical, and medical applications manufactured from extru-
tics
sion resins made from the copolymer of tetrafluoroethylene and
D1675 Test Methods for Polytetrafluoroethylene Tubing
hexafluoropropylene (FEP-fluorocarbon). This specification is
D2116 Specification for FEP Resin Molding and Extrusion
for virgin material only and does not address recycled material
Materials
as it is not appropriate for FEP tubing.
IEEE/ASTM SI 10 American National Standard for Use of
NOTE 1—Abbreviations are in accordance with Terminology D1600.
the International System of Units (SI): The Modern Metric
NOTE 2—There is no known ISO eqivalent to this standard.
System
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
3. Terminology
only.
3.1 Definitions—Definitions of terms used in this specifica-
1.3 The following safety hazards caveat pertains only to the
tion shall be in accordance with Terminology D883.
test methods portion, Section 8, of this specification: This
3.2 Definitions of Terms Specific to This Standard:
standard does not purport to address all of the safety concerns,
3.2.1 lot, n—one production run or uniform blend of two or
if any, associated with its use. It is the responsibility of the user
more production runs.
of this standard to establish appropriate safety, health, and
environmental practices and determine the applicability of
4. Classification
regulatory limitations prior to use.
1.4 This international standard was developed in accor-
4.1 This specification provides for three types of FEP-
dance with internationally recognized principles on standard-
fluorocarbon tubing differentiated by size schedules as follows:
ization established in the Decision on Principles for the
4.1.1 Type I—Tubing based upon the American Wire Gage
Development of International Standards, Guides and Recom-
(AWG) sizes.
mendations issued by the World Trade Organization Technical
4.1.2 Type II—Tubing based upon fractional inch sizes (see
Barriers to Trade (TBT) Committee.
Note 2).
4.1.3 Type III—Tubing of all other sizes, as agreed by buyer
2. Referenced Documents
and seller. This type shall conform to the Dimensional Toler-
2.1 ASTM Standards:
ances for FEP Tubing, as listed inTable 3.
D149 Test Method for Dielectric Breakdown Voltage and
4.2 The types are further differentiated in accordance with
Dielectric Strength of Solid Electrical Insulating Materials
increasing wall thicknesses as follows:
at Commercial Power Frequencies
4.2.1 Class A—Tubing having walls tabulated in Table 1
D618 Practice for Conditioning Plastics for Testing
listed as light-weight wall.
D792 Test Methods for Density and Specific Gravity (Rela-
4.2.2 Class C—Tubing having walls tabulated in Table 1
listed as standard wall (see Note 3).
1 4.2.3 Class D—Tubing having walls tabulated in Table 2
This specification is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic listed as chemical tubing.
Materials (Section 20.15.12).
4.2.4 Class E—Tubing having walls listed as heavy or
Current edition approved May 1, 2019. Published May 2019. Originally
conforming to the Dimensional Tolerances for FEP Tubing as
approved in 1974. Last previous edition approved in 2014 as D3296 - 14a. DOI:
listed in Table 3.
10.1520/D3296-14AR19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE 3—Tubing having electrical internal diameters and wall thickness
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
dimensions were deleted because of lack of demand.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. NOTE 4—Class B has been deleted because of lack of demand.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3296 − 14a (2019)
TABLE 1 Dimensions and Tolerances for Type I FEP-Fluorocarbon Tubing—Dimensions, mm (in.)
Wall Thickness
Inside Diameter Class A Class C
AWG Size
Lightweight Wall Standard Wall
min max nom min max nom min max
24 0.51 (0.020) 0.69 (0.027) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.305 (0.012) 0.254 (0.010) 0.356 (0.014)
22 0.64 (0.025) 0.81 (0.032) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.305 (0.012) 0.254 (0.010) 0.356 (0.014)
20 0.81 (0.032) 1.02 (0.040) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
19 0.91 (0.036) 1.12 (0.044) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
18 1.02 (0.040) 1.25 (0.049) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
17 1.14 (0.045) 1.37 (0.054) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
16 1.30 (0.051) 1.55 (0.061) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
15 1.45 (0.057) 1.70 (0.067) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
14 1.63 (0.064) 1.88 (0.074) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
13 1.83 (0.072) 2.08 (0.082) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
12 2.06 (0.081) 2.31 (0.091) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
11 2.31 (0.091) 2.57 (0.101) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
10 2.59 (0.102) 2.85 (0.112) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
9 2.90 (0.114) 3.15 (0.124) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
8 3.28 (0.129) 3.58 (0.141) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
7 3.66 (0.144) 4.01 (0.158) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
6 4.12 (0.162) 4.52 (0.178) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
5 4.62 (0.182) 5.03 (0.198) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
4 5.18 (0.204) 5.69 (0.224) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
3 5.82 (0.229) 6.33 (0.249) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
2 6.55 (0.258) 7.06 (0.278) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
1 7.34 (0.289) 7.90 (0.311) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
0 8.26 (0.325) 8.81 (0.347) 0.305 (0.012) 0.229 (0.009) 0.381 (0.015) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
TABLE 2 Dimensions and Tolerances for Type II FEP-Fluorocarbon Tubing—Dimensions, mm (in.)
Class D Class D
ID Size Fractions Inside Diameter Wall Dimensions
nom max min Thickness Tolerances
0.79 ( ⁄32) 0.79 (0.031) 0.89 (0.035) 0.69 (0.027) 0.41 (0.016) ±0.076 (±0.003)
1.59 ( ⁄16) 1.59 (0.062) 1.70 (0.067) 1.45 (0.057) 0.76 (0.030) ±0.127 (±0.005)
2.38 ( ⁄32) 2.38 (0.094) 2.51 (0.099) 2.26 (0.089) 0.76 (0.030) ±0.127 (±0.005)
3.18 ( ⁄8) 3.18 (0.125) 3.30 (0.130) 3.05 (0.120) 0.76 (0.030) ±0.127 (±0.005)
4.76 ( ⁄16) 4.76 (0.188) 4.90 (0.193) 4.65 (0.183) 0.76 (0.030) ±0.127 (±0.005)
6.35 ( ⁄4) 6.35 (0.250) 6.53 (0.257) 6.17 (0.243) 0.76 (0.030) ±0.127 (±0.005)
7.94 ( ⁄16) 7.94 (0.312) 8.13 (0.320) 7.72 (0.304) 0.76 (0.030) ±0.127 (±0.005)
9.52 ( ⁄8) 9.52 (0.375) 9.73 (0.383) 9.32 (0.367) 0.76 (0.030) ±0.127 (±0.005)
11.11 ( ⁄16) 11.11 (0.438) 11.38 (0.448) 10.87 (0.428) 0.76 (0.030) ±0.152 (±0.006)
12.70 ( ⁄2) 12.70 (0.500) 12.95 (0.510) 12.45 (0.490) 0.76 (0.030) ±0.152 (±0.006)
14.29 ( ⁄16) 14.29 (0.563) 14.58 (0.574) 14.02 (0.552) 0.76 (0.030) ±0.152 (±0.006)
15.88 ( ⁄8) 15.88 (0.625) 16.18 (0.637) 15.57 (0.613) 0.76 (0.030) ±0.152 (±0.006)
17.46 ( ⁄16) 17.46 (0.688) 17.78 (0.700) 17.17 (0.676) 0.81 (0.032) ±0.152 (±0.006)
19.05 ( ⁄4) 19.05 (0.750) 19.41 (0.764) 18.69 (0.736) 1.02 (0.040) ±0.178 (±0.007)
22.23 ( ⁄8) 22.23 (0.875) 22.63 (0.891) 21.82 (0.859) 1.14 (0.045) ±0.178 (±0.007)
25.40 (1) 25.40 (1.000) 25.91 (1.020) 24.89 (0.980) 1.27 (0.050) ±0.203 (±0.008)
31.75 (1 ⁄4) 31.75 (1.250) 32.26 (1.270) 31.24 (1.230) 1.27 (0.050) ±0.203 (±0.008)
38.10 (1 ⁄2) 38.10 (1.500) 38.74 (1.525) 37.47 (1.475) 1.27 (0.050) ±0.203 (±0.008)
50.80 (2) 50.80 (2.000) 51.44 (2.025) 50.17 (1.975) 1.27 (0.050) ±0.203 (±0.008)
4.3 A one-line system is used to specify materials in this For this example, the line callout would be Specification
specification. The system uses predefined cells to refer to D3296 – 14, IA, and would specify form of FEP-Fluoro
specific aspects
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D3296 − 14a D3296 − 14a (Reapproved 2019)
Standard Specification for
FEP-Fluorocarbon Tube
This standard is issued under the fixed designation D3296; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*Scope
1.1 The tubing is intended for electrical, mechanical, chemical, and medical applications manufactured from extrusion resins
made from the copolymer of tetrafluoroethylene and hexafluoropropylene (FEP-fluorocarbon). This specification is for virgin
material only and does not address recycled material as it is not appropriate for FEP tubing.
NOTE 1—Abbreviations are in accordance with Terminology D1600.
NOTE 2—There is no known ISO eqivalent to this standard.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 The following safety hazards caveat pertains only to the test methods portion, Section 8, of this specification: This standard
does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this
standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at
Commercial Power Frequencies
D618 Practice for Conditioning Plastics for Testing
D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
D1675 Test Methods for Polytetrafluoroethylene Tubing
D2116 Specification for FEP Resin Molding and Extrusion Materials
IEEE/ASTM SI 10 American National Standard for Use of the International System of Units (SI): The Modern Metric System
3. Terminology
3.1 Definitions—Definitions of terms used in this specification shall be in accordance with Terminology D883.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 lot, n—one production run or uniform blend of two or more production runs.
4. Classification
4.1 This specification provides for three types of FEP-fluorocarbon tubing differentiated by size schedules as follows:
4.1.1 Type I—Tubing based upon the American Wire Gage (AWG) sizes.
4.1.2 Type II—Tubing based upon fractional inch sizes (see Note 2).
4.1.3 Type III—Tubing of all other sizes, as agreed by buyer and seller. This type shall conform to the Dimensional Tolerances
for FEP Tubing, as listed inTable 3.
This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials
(Section 20.15.12).
Current edition approved Aug. 1, 2014May 1, 2019. Published September 2014May 2019. Originally approved in 1974. Last previous edition approved in 2014 as
D3296 - 14.D3296 - 14a. DOI: 10.1520/D3296-14A.10.1520/D3296-14AR19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3296 − 14a (2019)
TABLE 1 Dimensions and Tolerances for Type I FEP-Fluorocarbon Tubing—Dimensions, mm (in.)
Wall Thickness
Inside Diameter Class A Class C
AWG Size
Lightweight Wall Standard Wall
min max nom min max nom min max
24 0.51 (0.020) 0.69 (0.027) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.305 (0.012) 0.254 (0.010) 0.356 (0.014)
22 0.64 (0.025) 0.81 (0.032) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.305 (0.012) 0.254 (0.010) 0.356 (0.014)
20 0.81 (0.032) 1.02 (0.040) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
19 0.91 (0.036) 1.12 (0.044) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
18 1.02 (0.040) 1.25 (0.049) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
17 1.14 (0.045) 1.37 (0.054) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
16 1.30 (0.051) 1.55 (0.061) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
15 1.45 (0.057) 1.70 (0.067) 0.152 (0.006) 0.102 (0.004) 0.203 (0.008) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
14 1.63 (0.064) 1.88 (0.074) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
13 1.83 (0.072) 2.08 (0.082) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
12 2.06 (0.081) 2.31 (0.091) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
11 2.31 (0.091) 2.57 (0.101) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
10 2.59 (0.102) 2.85 (0.112) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.406 (0.016) 0.330 (0.013) 0.483 (0.019)
9 2.90 (0.114) 3.15 (0.124) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
8 3.28 (0.129) 3.58 (0.141) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
7 3.66 (0.144) 4.01 (0.158) 0.203 (0.008) 0.152 (0.006) 0.254 (0.010) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
6 4.12 (0.162) 4.52 (0.178) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
5 4.62 (0.182) 5.03 (0.198) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
4 5.18 (0.204) 5.69 (0.224) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
3 5.82 (0.229) 6.33 (0.249) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
2 6.55 (0.258) 7.06 (0.278) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
1 7.34 (0.289) 7.90 (0.311) 0.254 (0.010) 0.178 (0.007) 0.330 (0.013) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
0 8.26 (0.325) 8.81 (0.347) 0.305 (0.012) 0.229 (0.009) 0.381 (0.015) 0.508 (0.020) 0.406 (0.016) 0.610 (0.024)
TABLE 2 Dimensions and Tolerances for Type II FEP-Fluorocarbon Tubing—Dimensions, mm (in.)
Class D Class D
ID Size Fractions Inside Diameter Wall Dimensions
nom max min Thickness Tolerances
0.79 ( ⁄32) 0.79 (0.031) 0.89 (0.035) 0.69 (0.027) 0.41 (0.016) ±0.076 (±0.003)
1.59 ( ⁄16) 1.59 (0.062) 1.70 (0.067) 1.45 (0.057) 0.76 (0.030) ±0.127 (±0.005)
2.38 ( ⁄32) 2.38 (0.094) 2.51 (0.099) 2.26 (0.089) 0.76 (0.030) ±0.127 (±0.005)
3.18 ( ⁄8) 3.18 (0.125) 3.30 (0.130) 3.05 (0.120) 0.76 (0.030) ±0.127 (±0.005)
4.76 ( ⁄16) 4.76 (0.188) 4.90 (0.193) 4.65 (0.183) 0.76 (0.030) ±0.127 (±0.005)
6.35 ( ⁄4) 6.35 (0.250) 6.53 (0.257) 6.17 (0.243) 0.76 (0.030) ±0.127 (±0.005)
7.94 ( ⁄16) 7.94 (0.312) 8.13 (0.320) 7.72 (0.304) 0.76 (0.030) ±0.127 (±0.005)
9.52 ( ⁄8) 9.52 (0.375) 9.73 (0.383) 9.32 (0.367) 0.76 (0.030) ±0.127 (±0.005)
11.11 ( ⁄16) 11.11 (0.438) 11.38 (0.448) 10.87 (0.428) 0.76 (0.030) ±0.152 (±0.006)
12.70 ( ⁄2) 12.70 (0.500) 12.95 (0.510) 12.45 (0.490) 0.76 (0.030) ±0.152 (±0.006)
14.29 ( ⁄16) 14.29 (0.563) 14.58 (0.574) 14.02 (0.552) 0.76 (0.030) ±0.152 (±0.006)
15.88 ( ⁄8) 15.88 (0.625) 16.18 (0.637) 15.57 (0.613) 0.76 (0.030) ±0.152 (±0.006)
17.46 ( ⁄16) 17.46 (0.688) 17.78 (0.700) 17.17 (0.676) 0.81 (0.032) ±0.152 (±0.006)
19.05 ( ⁄4) 19.05 (0.750) 19.41 (0.764) 18.69 (0.736) 1.02 (0.040) ±0.178 (±0.007)
22.23 ( ⁄8) 22.23 (0.875) 22.63 (0.891) 21.82 (0.859) 1.14 (0.045) ±0.178 (±0.007)
25.40 (1) 25.40 (1.000) 25.91 (1.020) 24.89 (0.980) 1.27 (0.050) ±0.203 (±0.008)
31.75 (1 ⁄4) 31.75 (1.250) 32.26 (1.270) 31.24 (1.230) 1.27 (0.050) ±0.203 (±0.008)
38.10 (1 ⁄2) 38.10 (1.500) 38.74 (1.525) 37.47 (1.475) 1.27 (0.050) ±0.203 (±0.008)
50.80 (2) 50.80 (2.000) 51.44 (2.025) 50.17 (1.975) 1.27 (0.050) ±0.203 (±0.008)
4.2 The types are further differentiated in accordance with increasing wall thicknesses as follows:
4.2.1 Class A—Tubing having walls tabulated in Table 1 listed as light-weight wall.
4.2.2 Class C—Tubing having walls tabulated in Table 1 listed as standard wall (see Note 3).
4.2.3 Class D—Tubing having walls tabulated in Table 2 listed as chemical tubing.
4.2.4 Class E—Tubing having walls listed as heavy or conforming to the Dimensional Tolerances for FEP Tubing as listed in
Table 3.
NOTE 3—Tubing having electrical internal diameters and wall thickness dimensions were deleted because of lack of demand.
NOTE 4—Class B has been deleted because of lack of demand.
4.3 A one-line system is used to specify materials in this specification. The system uses predefined cells to refer to specific
aspects of this specification, as illustrated as follows:
D3296 − 14a (2019)
TABLE 3 Dimensions and Tolerances for Type III FEP-Fluorocarbon Tubing-Dimensions, mm (in.)
Class E Inside Diameter Class E Wall Thickness
Ins
...