ASTM F1836M-09(2013)

Standard Specification for Stuffing Tubes, Nylon, and Packing Assemblies (Metric)

ABSTRACT
This specification covers the general requirements for nylon stuffing tubes and packing assemblies. Nylon stuffing tubes are intended for making electric cable penetrations in marine shipboard enclosures for electrical equipment. The following types are suitable for thin-wall enclosures up to a certain thickness and thick-wall enclosures, bulkheads, and decks of also of a certain thickness. Nylon stuffing tubes shall be classified into four types: Type 1 with straight, unified form thread, Type 2 with 90�, unified form thread, Type 3 with NPT, American standard pipe thread and Type 4 with Y, unified form thread. Materials used for the manufacture of these stuffing tubes and packing assemblies shall include polyamide or nylon and synthetic rubber or neoprene. The sizes and dimensions of stuffing tubes and packing assemblies are completely described. In order determine properties such as vibration resistance, ruggedness, and seal effectiveness of stuffing tubes, the following tests shall be performed: vibration test, mechanical abuse test, and level of effectiveness test. In terms of physical appearance, stuffing tubes shall be free from warp, cracks, chipped edges or surfaces, blisters, uneven surfaces, scratches, dents, and heat marks. They shall be free from fins, burrs, and unsightly finish caused by chipping, filing, or grinding without subsequent buffing or polishing. All molded nylon parts shall be cleaned thoroughly of annealing mediums. Packing assemblies shall be free of voids, pin holes, flash, or other imperfections, that may impair their serviceability.
SCOPE
1.1 This specification covers the general requirements for nylon stuffing tubes and packing assemblies. Nylon stuffing tubes are intended for making electric cable penetrations in marine shipboard enclosures for electrical equipment. The following types are suitable for both thin-wall enclosures up to 5 mm (3/16 in.) thick and thick-wall enclosures, bulkheads, and decks of 5 to 19 mm (3/16 to 3/4 in.) thick.  
1.2 This specification does not cover metal stuffing tubes.  
1.3 The values stated in SI units are to be regarded as standard.  
1.4 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 its use.

General Information

• Status: Historical
• Publication Date: 30-Sep-2013
• ICS: 47.020.60 - Electrical equipment of ships and of marine structures
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.10 - Electrical

Relations

• Replaces: ASTM F1836M-09 - Standard Specification for Stuffing Tubes, Nylon, and Packing Assemblies (Metric)
• Effective Date: 01-Oct-2013
• Replaced By: ASTM F1836M-15 - Standard Specification for Stuffing Tubes, Nylon, and Packing Assemblies (Metric)
• Effective Date: 01-Dec-2015

Standards Content (Sample)

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:F1836M −09 (Reapproved 2013) An American National Standard
Standard Specification for
Stuffing Tubes, Nylon, and Packing Assemblies (Metric)
This standard is issued under the fixed designation F1836M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 2.4 IEC Standard
Standard 68-2-6 Environmental Testing–Part 2: Tests–Test
1.1 This specification covers the general requirements for
FC: Vibration (Sinusoidal) Sixth Edition
nylon stuffing tubes and packing assemblies. Nylon stuffing
tubes are intended for making electric cable penetrations in
3. Terminology
marine shipboard enclosures for electrical equipment. The
following types are suitable for both thin-wall enclosures up to
3.1 Definitions of Terms Specific to This Standard:
5mm( ⁄16 in.) thick and thick-wall enclosures, bulkheads, and
3.1.1 nylon stuffıng tube, n—a marine electrical fitting used
3 3
decks of 5 to 19 mm ( ⁄16 to ⁄4 in.) thick.
for the sealing of cable penetration into shipboard enclosures
while maintaining or exceeding the degree of protection for
1.2 This specification does not cover metal stuffing tubes.
which the enclosure is rated.
1.3 The values stated in SI units are to be regarded as
standard. 3.1.2 packing assembly, n—the compressible insert for the
nylon stuffing tube. It consists of one neoprene bushing and
1.4 This standard does not purport to address all of the
three nylon washers.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3.1.3 enclosure, n—an electrical panel, cabinet, junction
priate safety and health practices and determine the applica-
box, light fixture, electrical equipment, control box, or panel.
bility of regulatory limitations prior to its use.
4. Classification
2. Referenced Documents
2 4.1 Nylon stuffing tubes shall be of the following types (see
2.1 ASTM Standards:
Fig. 1):
D2000 Classification System for Rubber Products in Auto-
4.1.1 Type 1—straight—Unified Form Thread.
motive Applications
D4066 Classification System for Nylon Injection and Extru- 4.1.2 Type 2—90°—Unified Form Thread.
sion Materials (PA)
4.1.3 Type 3—NPT—American Standard Pipe Thread.
2.2 NEMA Standards:
4.1.4 Type 4—Y—Unified Form Thread.
Standard 250 Enclosures for Electrical Equipment (1000 V
Max)
5. Ordering Information
2.3 ASME Standard:
5.1 Orders for stuffing tubes under this specification shall
ASME B1.1 Unified Inch Screw Threads (UN and UNR
include the following:
Thread Form)
5.1.1 Type (see 4.1).
5.1.2 Part number (see Table 1).
This specification is under the jurisdiction of ASTM Committee F25 on Ships
and Marine Technology and is the direct responsibility of Subcommittee F25.10 on
5.1.3 Packing assembly size (see Fig. 2 and Table 2).
Electrical.
5.1.4 The O-ring included in the stuffing tube assembly has
Current edition approved Oct. 1, 2013. Published October 2013. Originally
approved in 1997. Last previous edition approved in 2009 as F1836M - 09. DOI:
a finite shelf life. If the stuffing tube assembly is used after the
10.1520/F1836M-09R13.
shelf life has expired, the O-ring should be replaced, using the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
appropriate size listed in Table 1.
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 National Electrical Manufacturers Association (NEMA), 1300
N. 17th St., Suite 1752, Rosslyn, VA 22209, http://www.nema.org. Available from American Society of Mechanical Engineers (ASME), ASME
Available from the International Electrotechnical Commission, 3 rue de International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
Varembe, Case postale 131, CH-1211, Geneva 20, Switzerland. www.asme.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1836M−09 (2013)
FIG. 1Stuffing Tube Types
5.1.5 ASTM Part Number. The part number comprises the 6.1.1 Polyamide (nylon) molding plastic material shall be
ASTM specification number, type designator and assigned Group 1, Class 8, Grade 1 in accordance with Specification
dash number as shown in the following example: D4066.
6.1.2 Synthetic rubber (neoprene) shall be in accordance
F1836M Type-3 -002
ASTM Part Type Size
with Classification D2000, M2, BC, 410, A14, B14, C12, and
Designator Designator Designator
F19.
Example: F1836M Type-3-002: Size 2 NPT stuffing tube
6.2 Manufacture:
(see Fig. 1).
6.2.1 Molded nylon parts, such as body, washers, locknut,
and cap, shall meet the requirements specified herein.
6. Materials and Manufacture
6.2.2 Threads shall be unified form UN 2A or 2B or taper
6.1 Materials: pipe thread (NPT) as specified in ASME Standard B1.1.
F1836M−09 (2013)
TABLE 1 Stuffing Tubes Part Numbers and Dimensional Data
Tube Part Cable Range Packing Clearance Hole Diameter O-Ring
A
Size No. in. mm Assembly for Tube Install Buna-N
min. max. min. max. in. mm Size
1 Type-1-001 0.077 0.300 1.96 7.62 -16 0.885 22.48 212
2 -002 0.275 0.472 6.99 11.99 -17 1.010 25.65 214
3 -003 0.410 0.472 10.41 11.99 -18 1.135 28.83 216
Straight 4 -004 0.450 0.777 11.43 19.74 -19 1.260 32.00 218
Type 1 4T -005 0.450 0.777 11.43 19.74 -19 1.385 35.18 220
5 -006 0.752 1.113 19.10 28.27 -20 2.010 51.05 226
6 -007 0.806 1.390 20.47 35.31 -21 2.510 63.75 230
7 -008 1.433 1.610 36.40 40.89 -22 2.760 70.10 232
8 -009 1.625 2.00 41.28 50.80 -23 3.260 82.80 236
9 -010 2.030 2.700 51.56 68.58 -24 4.010 101.85 242
Tube Part Cable Range Packing Clearance Hole Diameter O-Ring
A
Size No. in. mm Assembly for Tube Install Buna-N
min. max. min. max. in. mm Size
1 Type-2-001 0.077 0.300 1.96 7.62 -16 0.885 22.48 212
90° 2 -002 0.275 0.472 6.99 11.99 -17 0.885 22.48 212
Type 2 3 -003 0.410 0.472 10.41 11.99 -18 1.135 28.83 216
4T -005 0.450 0.777 11.43 19.74 -19 1.260 32.00 218
5 -006 0.752 1.113 19.10 28.27 -20 2.010 51.05 220
6 -007 0.806 1.390 20.47 35.31 -21 2.510 63.75 230
Tube Part Cable Range Packing NPT
A
Size No. in. mm Assembly
min. max. min. max.
1 Type-3-001 0.077 0.300 1.96 7.62 -16 0.5
2 -002 0.275 0.472 6.99 11.99 -17 0.75
3 -003 0.410 0.472 10.41 11.99 -18 1.0
NPT 4T -004 0.450 0.777 11.43 19.74 -19 1.0
Type 3 5 -005 0.752 1.113 19.10 28.27 -20 1.5
6 -006 0.806 1.390 20.47 35.31 -21 2
7 -007 1.433 1.610 36.40 40.89 -22 2.5
8 -008 1.625 2.00 41.28 50.80 -23 3
9 -009 2.030 2.700 51.56 68.58 -24 3.5
Tube Part Cable Ranges Packing Clearance Hole Diameter O-Ring
A
Size No. in. mm Assembly for Tube Install Buna-N
min. max. min. max. in. mm Size
1 Type-4-001 0.077 0.300 1.96 7.62 -16 0.885 22.48 212
Y 2 -002 0.275 0.472 6.99 11.99 -17 1.010 25.65 214
Type 4 3 -003 0.410 0.472 10.41 11.99 -18 1.135 28.83 216
4T -004 0.450 0.777 11.43 19.74 -19 1.385 35.18 220
A
See Table 2 size selection.
7.1.2 Ruggedness—When stuffing tubes are subjected to a
mechanical abuse test as specified in 9.2, there shall be no
cracking, breaking, distortion, or damage to the sample.
7.1.3 Effectiveness of seal—When stuffing tubes are tested
as specified in 9.3, there shall be no evidence of leakage
through or around the stuffing tubes.
8. Workmanship, Finish, and Appearance
8.1 Stuffing tubes shall be free from warp, cracks, chipped
edges or surfaces, blisters, uneven surfaces, scratches, dents,
FIG. 2Typical Packing Assembly
and heat marks. They shall be free from fins, burrs, and
unsightly finish caused by chipping, filing, or grinding without
6.2.3 Neoprene parts, such as bushing and plug, shall meet
subsequent buffing or polishing. All molded nylon parts shall
the requirements specified in Classification D2000, and when
be cleaned thoroughly of annealing mediums. Packing assem-
assembled in a stuffing tube, shall meet the performance
blies shall be free of voids, pin holes, flash, or other
requirements specified herein.
imperfections, that may impair their serviceability.
7. Other Requirements 9. Test Methods
7.1 Performance Requirements: 9.1 Conformance testing of a random sample may be
7.1.1 Vibration resistance—When stuffing tubes are tested requested by the purchaser to verify that selected performance
as specified in 9.1, there shall be no evidence of cracking or characteristics specified herein have been incorporated in the
loosening of parts. stuffing tube design and maintained in production.
F1836M−09 (2013)
TABLE 2 Packing Assembly Size
NOTE 1—Packing assembly selection requires that the packing bushing inner diameter (D) be equal or slightly larger than the cable maximum diameter
(DIA).
NOTE 2—I.D. column indicates the bushing inner diameter.
Cable Range Cable Range
in. mm in. mm
Tube Part I.D. I.D. Tube Part I.D. I.D.
Size No. min. max. min. max. Size No. min. max. min. max.
16-001 0.137 0.187 3.48 4.75 21-001 1.119 1.159 28.42 29.44
-002 0.077 0.127 1.96 3.23 -002 1.127 1.167 28.63 29.64
-003 0.100 0.150 2.54 3.81 -003 1.160 1.200 29.46 30.48
-004 0.184 0.234 4.67 5.94 -004 1.204 1.254 30.58 31.85
-005 0.228 0.278 5.79 7.06 -005 1.255 1.305 31.89 33.15
-006 0.244 0.300 6.20 7.62 -006 1.309 1.350 33.25 34.29
17-001 0.275 0.325 6.99 8.26 -007 1.350 1.390 34.29 35.11
-002 0.317 0.367 8.05 9.32 -008 0.856 0.886 21.74 22.50
-003 0.3
...