ASTM D6867-19

Standard Specification for Perfluoroalkoxy (PFA)-Fluoropolymer Tubing

ABSTRACT
This specification covers tubing produced from PFA fluoropolymer resins which are cited in another specification. This document specifies tubing dimensional tolerances, tensile properties and related electrical properties as noted in the appropriate tables when tested in accordance with the methods cited. Different tests shall be performed in order to determine the following properties of resins: inside diameter, wall thickness, specific gravity, tensile strength, elongation, and dimensional stability.
SCOPE
1.1 This specification covers tubing produced from PFA Fluoropolymer resins which are cited in Specification D3307. This document specifies tubing dimensional tolerances, tensile properties and related electrical properties as noted in the appropriate tables when tested in accordance with the methods cited in this specification. This specification is for virgin material only and does not address recycled material, as it is not appropriate for PFA tubing.
Note 1: Abbreviations are in accordance with Terminology D1600.
Note 2: There is no known ISO equivalent to this standard.  
1.2 The values stated in SI units are to be regarded as 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 7, 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, health, and environmental 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: Published
• Publication Date: 30-Sep-2019
• ICS: 83.140.99 - Other rubber and plastics products
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.15 - Thermoplastic Materials

Relations

• Replaces: ASTM D6867-03(2014) - Standard Specification for Perfluoroalkoxy (PFA)-Fluoropolymer Tubing
• Effective Date: 01-Oct-2019
• 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 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 D4894-19 - Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials
• Effective Date: 01-May-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 D4894-15 - Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials
• Effective Date: 01-May-2015
• Refers: ASTM D1600-14 - Standard Terminology for Abbreviated Terms Relating to Plastics
• Effective Date: 01-Feb-2014

Overview

ASTM D6867-19: Standard Specification for Perfluoroalkoxy (PFA)-Fluoropolymer Tubing establishes requirements for tubing produced from virgin PFA fluoropolymer resins. Developed by ASTM International, this standard addresses key properties such as dimensional tolerances, tensile strength, elongation, specific gravity, and dimensional stability. It is widely used in industries that require reliable, chemically resistant, and high-purity fluoropolymer tubing. This standard references ASTM D3307 for resin requirements and does not cover tubing made from recycled material.

Key Topics

• Material Requirements

  • Only virgin PFA fluoropolymer resins conforming to ASTM D3307 are permitted.
  • There is no provision for recycled material, ensuring high purity and performance.
  • Abbreviations and terminology are as per ASTM D1600 and D883.

• Dimensional Tolerances

  • Specifies detailed tolerances for inside diameters and wall thicknesses across a broad range of tubing sizes, ensuring consistent product quality.

• Physical Properties

  • Specific gravity: Must be between 2.12 and 2.17.
  • Tensile strength: Minimum required is 10.0 MPa (1500 psi).
  • Elongation: Minimum of 200% at break.
  • Tubing must remain free of cracks and splits after dimensional stability tests.

• Testing & Conditioning

  • Sampling, specimen conditioning, and testing must be performed according to referenced ASTM methods such as D618, D792, D1675, and D4894.
  • All tests must be conducted under standardized temperature and laboratory conditions.

• Inspection & Certification

  • Visual and dimensional inspections are required.
  • Certification of virgin material and test compliance must be provided for each lot.

• Packaging & Marking

  • Products must be packaged in commercial-grade containers suitable for safe transport unless otherwise specified.

Applications

PFA-fluoropolymer tubing produced under ASTM D6867-19 is recognized for its outstanding chemical resistance, high thermal stability, and purity. Typical applications include:

• Semiconductor manufacturing: For ultrapure water and aggressive chemical handling.
• Pharmaceutical and biotech: In critical fluid transfer lines requiring non-leaching and contaminant-free materials.
• Chemical processing: Used in lines where resistance to solvents, acids, and high temperatures is vital.
• Analytical and laboratory equipment: For safe and reliable fluid transport.
• Electrical insulations: Where high dielectric strength and thermal resistance are needed.

The dimensional precision, mechanical properties, and chemical resistance specified by ASTM D6867-19 make PFA tubing a preferred solution in demanding environments.

Related Standards

For comprehensive applications and broader understanding, refer to these related ASTM standards:

• ASTM D3307 - Specification for Perfluoroalkoxy (PFA) Resin Molding and Extrusion Materials
• ASTM D618 - Practice for Conditioning Plastics for Testing
• ASTM D792 - Test Methods for Density and Specific Gravity of Plastics by Displacement
• ASTM D1675 - Test Methods for Polytetrafluoroethylene Tubing
• ASTM D4894 - Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials
• ASTM D1600, D883 - Terminology for Plastics

Keywords: PFA tubing, fluoropolymer tubing, ASTM D6867-19, perfluoroalkoxy, tensile strength, chemical resistance, high purity tubing, ASTM standards, plastics testing, laboratory fluid handling

By adhering to ASTM D6867-19, manufacturers and end-users ensure the performance, consistency, and reliability of PFA-fluoropolymer tubing across a range of demanding industries.

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: D6867 −19
Standard Specification for
Perfluoroalkoxy (PFA)-Fluoropolymer Tubing
This standard is issued under the fixed designation D6867; 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* D1600 Terminology forAbbreviatedTerms Relating to Plas-
tics
1.1 This specification covers tubing produced from PFA
D1675 Test Methods for Polytetrafluoroethylene Tubing
Fluoropolymer resins which are cited in Specification D3307.
D3307 Specification for Perfluoroalkoxy (PFA) Resin Mold-
This document specifies tubing dimensional tolerances, tensile
ing and Extrusion Materials
properties and related electrical properties as noted in the
D4894 Specification for Polytetrafluoroethylene (PTFE)
appropriate tables when tested in accordance with the methods
Granular Molding and Ram Extrusion Materials
cited in this specification. This specification is for virgin
IEEE/ASTM SI 10 Standard for Use of the International
material only and does not address recycled material, as it is
System of Units (SI): The Modern Metric System
not appropriate for PFA tubing.
NOTE 1—Abbreviations are in accordance with Terminology D1600.
3. Terminology
NOTE 2—There is no known ISO equivalent to this standard.
3.1 Definitions:
1.2 The values stated in SI units are to be regarded as
3.1.1 Definitions are in accordance with Terminology D883
standard. The values given in parentheses are for information
unless otherwise specified.
only.
3.1.2 lot, n—one continuous production run or a uniform
1.3 The following safety hazards caveat pertains only to the
blend of two or more production runs of one size sheet or
test methods portion, Section 7, of this specification. This
molded basic shape.
standard does not purport to address all of the safety concerns,
if any, associated with its use. It is the responsibility of the user 4. Physical Requirements
of this standard to establish appropriate safety, health, and
4.1 The tubing shall be made of PFA-fluoropolymer resin
environmental practices and determine the applicability of
meeting the requirements of Specification D3307.
regulatory limitations prior to use.
4.2 Theinsidediameterandwallthicknessandtolerancesof
1.4 This international standard was developed in accor-
the tubing shall be as shown in Table 1, when determined in
dance with internationally recognized principles on standard-
accordance with 7.1.3.1 and 7.1.3.2.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
4.3 The specific gravity of the tubing shall be between 2.12
mendations issued by the World Trade Organization Technical
and 2.17 inclusive when determined in accordance with 7.1.4.
Barriers to Trade (TBT) Committee.
4.4 The tubing shall have a minimum tensile strength of
10.0 MPa (1500 psi) and a minimum elongation of 200 %
2. Referenced Documents
when determined in accordance with 7.1.5.
2.1 ASTM Standards:
4.5 The tubing shall remain free from cracks and exhibit no
D618 Practice for Conditioning Plastics for Testing
splitting when tested for dimensional stability in accordance
D792 Test Methods for Density and Specific Gravity (Rela-
with 7.1.6.
tive Density) of Plastics by Displacement
D883 Terminology Relating to Plastics
5. Sampling
5.1 Sampling shall be statistically adequate to satisfy the
This specification is under the jurisdiction of ASTM Committee D20 on
requirements of 8.2.
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic
Materials.
6. Number of Tests
Current edition approved Oct. 1, 2019. Published October 2019. Originally
6.1 One set of test specimens as described in Section 7 shall
approved in 2003. Last previous edition approved in 2014 as D6867 - 03(2014).
DOI: 10.1520/D6867-19.
be considered sufficient for testing each batch. The average
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 Available from ASTM International Headquarters, 100 Barr Harbor Drive, PO
the ASTM website. Box C700, West Conshohocken, PA 19428–2959.
*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
D6867 − 19
TABLE 1 Dimensions and Tolerances for PFA-Fluorocarbon Tubing-Dimensions, mm (in.)
Inside Diameter Wall Thickness
Nominal Inside Diameter, Inside Diameter Tolerance, Nominal Thickness, Thickness Tolerance,
mm (in.) mm (in.) mm (in.) mm (in.)
0 to 0.25 (0.000 to 0.010) ±0.03 (0.001) 0 to 0.13 (0.000 to 0.005) ±0.030 (0.001)
0.26 to 0.50 (0.011 to 0.020) ±0.05 (0.002) 0.14 to 0.30 (0.006 to 0.012) ±0.050 (0.002)
0.51 to 0.75 (0.021 to 0.030) ±0.08 (0.003) 0.31 to 0.48 (0.013 to 0.019) ±0.080 (0.003)
0.76 to 2.54 (0.031 to 0.100) ±0.10 (0.004) 0.49 to 0.74 (0.020 to 0.029) ±0.100 (0.004)
2.55 to 4.32 (0.101 to 0.170) ±0.13 (0.005) 0.75 and >(0.030 and >) ±0.130 (0.005)
4.33 to 6.35 (0.171 to 0.250) ±0.15 (0.006)
6.36 to 19.05 (0.251 to 0.750) ±0.18 (0.007)
19.06 to 25.39 (0.751 to 0.999) ±0.25 (0.010)
25.4 and (1.000 and >) ±0.38 (0.015)
result of the specimens tested shall conform to the require- specimens separately. Discard specimens that break in
...

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: D6867 − 03 (Reapproved 2014) D6867 − 19
Standard Specification for
Perfluoroalkoxy (PFA)-Fluoropolymer Tubing
This standard is issued under the fixed designation D6867; 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 This specification covers tubing produced from PFA Fluoropolymer resins which are cited in Specification D3307. This
document specifies tubing dimensional tolerances, tensile properties and related electrical properties as noted in the appropriate
tables when tested in accordance with the methods cited in this specification. This specification is for virgin material only and does
not address recycled material, as it is not appropriate for PFA tubing.
NOTE 1—Abbreviations are in accordance with Terminology D1600.
NOTE 2—There is no known ISO equivalent to this standard.
1.2 The values stated in SI units are to be regarded as 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 7, 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 safety, health, and healthenvironmental practices and determine the applicability of
regulatory requirementslimitations 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:
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
D3307 Specification for Perfluoroalkoxy (PFA) Resin Molding and Extrusion Materials
D4894 Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials
IEEE/ASTM SI 10 Standard for Use of the International System of Units (SI): The Modern Metric System
3. Terminology
3.1 Definitions:
3.1.1 Definitions are in accordance with Terminology D883 unless otherwise specified.
3.1.2 lot, n—one continuous production run or a uniform blend of two or more production runs of one size sheet or molded basic
shape.
4. Physical Requirements
4.1 The tubing shall be made of PFA-fluoropolymer resin meeting the requirements of Specification D3307.
4.2 The inside diameter and wall thickness and tolerances of the tubing shall be as shown in Table 1, when determined in
accordance with 7.1.3.1 and 7.1.3.2.
This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials.
Current edition approved Oct. 1, 2014Oct. 1, 2019. Published October 2014October 2019. Originally approved in 2003. Last previous edition approved in 20092014 as
D6867 - 03(2009).(2014). DOI: 10.1520/D6867-03R14.10.1520/D6867-19.
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.
Available from ASTM International Headquarters, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428–2959.
*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
D6867 − 19
TABLE 1 Dimensions and Tolerances for PFA-Fluorocarbon Tubing-Dimensions, mm (in.)
Inside Diameter Wall Thickness
Nominal Inside Diameter, Inside Diameter Tolerance, Nominal Thickness, Thickness Tolerance,
mm (in.) mm (in.) mm (in.) mm (in.)
0 to 0.25 (0.000 to 0.010) ±0.03 (0.001) 0 to 0.13 (0.000 to 0.005) ±0.030 (0.001)
0.26 to 0.50 (0.011 to 0.020) ±0.05 (0.002) 0.14 to 0.30 (0.006 to 0.012) ±0.050 (0.002)
0.51 to 0.75 (0.021 to 0.030) ±0.08 (0.003) 0.31 to 0.48 (0.013 to 0.019) ±0.080 (0.003)
0.76 to 2.54 (0.031 to 0.100) ±0.10 (0.004) 0.49 to 0.74 (0.020 to 0.029) ±0.100 (0.004)
2.55 to 4.32 (0.101 to 0.170) ±0.13 (0.005) 0.75 and >(0.030 and >) ±0.130 (0.005)
4.33 to 6.35 (0.171 to 0.250) ±0.15 (0.006)
6.36 to 19.05 (0.251 to 0.750) ±0.18 (0.007)
19.06 to 25.39 (0.751 to 0.999) ±0.25 (0.010)
25.4 and (1.000 and >) ±0.38 (0.015)
4.3 The specific gravity of the tubing shall be between 2.12 and 2.17 inclusive when determined in accordance with 7.1.4.
4.4 The tubing shall have a minimum tensile strength of 10.0 MPa (1500 psi) and a minimum elongation of 200 % when
determined in accordance with 7.1.5.
4.5 The tubing shall remain free from cracks and exhibit no splitting when tested for dimensional stability in accordance with
7.1.6.
5. Sampling
5.1 Sampling shall be statistically adequate to satisfy the requirements of 8.2.
6. Number of Tests and Retests
6.1 One set of five test specimens as described in Section 7 shall be considered sufficient for testing each batch. The average
result of the spec
...