ASTM F1836M-97(2007)

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.
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-Apr-2007
• 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-97(2002) - Standard Specification for Stuffing Tubes, Nylon, and Packing Assemblies (Metric)
• Effective Date: 01-May-2007
• Replaced By: ASTM F1836M-09 - Standard Specification for Stuffing Tubes, Nylon, and Packing Assemblies (Metric)
• Effective Date: 01-Mar-2009

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
An American National Standard
Designation: F 1836M – 97 (Reapproved 2007)
Standard Specification for
Stuffing Tubes, Nylon, and Packing Assemblies (Metric)
This standard is issued under the fixed designation F 1836M; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope Standard 68-2-6 Environmental Testing–Part 2: Tests–Test
FC: Vibration (Sinusoidal) Sixth Edition
1.1 This specification covers the general requirements for
nylon stuffing tubes and packing assemblies. Nylon stuffing
3. Terminology
tubes are intended for making electric cable penetrations in
3.1 Definitions of Terms Specific to This Standard:
marine shipboard enclosures for electrical equipment. The
3.1.1 nylon stuffıng tube, n—a marine electrical fitting used
following types are suitable for both thin-wall enclosures up to
for the sealing of cable penetration into shipboard enclosures
5mm( ⁄16 in.) thick and thick-wall enclosures, bulkheads, and
while maintaining or exceeding the degree of protection for
3 3
decks of 5 to 19 mm ( ⁄16 to ⁄4 in.) thick.
which the enclosure is rated.
1.2 This specification does not cover metal stuffing tubes.
3.1.2 packing assembly, n—the compressible insert for the
1.3 This standard does not purport to address all of the
nylon stuffing tube. It consists of one neoprene bushing and
safety concerns, if any, associated with its use. It is the
three nylon washers.
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
4.1 Nylon stuffing tubes shall be of the following types (see
2.1 ASTM Standards:
Fig. 1):
D 2000 Classification System for Rubber Products inAuto-
4.1.1 Type 1—straight—Unified Form Thread.
motive Applications
4.1.2 Type 2—90°—Unified Form Thread.
D 4066 Classification System for Nylon Injection and Ex-
4.1.3 Type 3—NPT—American Standard Pipe Thread.
trusion Materials (PA)
4.1.4 Type 4—Y—Unified Form Thread.
2.2 NEMA Standards:
Standard 250 Enclosures for Electrical Equipment (1000 V
5. Ordering Information
Max)
5.1 Orders for stuffing tubes under this specification shall
2.3 ASME Standard:
include the following:
ASME B1.1 Unified Inch Screw Threads (UN and UNR
4 5.1.1 Type (see 4.1).
Thread Form)
5.1.2 Part number (see Table 1).
2.4 IEC Standard
5.1.3 Packing assembly size (see Fig. 2 and Table 2).
5.1.4 The O-ring included in the stuffing tube assembly has
This specification is under the jurisdiction of ASTM Committee F25 on Ships
a finite shelf life. If the stuffing tube assembly is used after the
and Marine Technology and is the direct responsibility of Subcommittee F25.10 on
shelf life has expired, the O-ring should be replaced, using the
Electrical.
appropriate size listed in Table 1.
Current edition approved May 1, 2007. Published June 2007. Originally
approved in 1997. Last previous edition approved in 2002 as F 1836M - 97(2002).
6. Materials and Manufacture
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
6.1 Materials:
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.
F 1836M – 97 (2007)
FIG. 1 Stuffing Tube Types
6.1.1 Polyamide (nylon) molding plastic material shall be 6.2.3 Neoprene parts, such as bushing and plug, shall meet
Group 1, Class 8, Grade 1 in accordance with Specification
the requirements specified in Classification D 2000, and when
D 4066.
assembled in a stuffing tube, shall meet the performance
6.1.2 Synthetic rubber (neoprene) shall be in accordance
requirements specified herein.
with Classification D 2000, M2, BC, 410,A14, B14, C12, and
F19.
7. Other Requirements
6.2 Manufacture:
7.1 Performance Requirements:
6.2.1 Molded nylon parts, such as body, washers, locknut,
7.1.1 Vibration resistance—When stuffing tubes are tested
and cap, shall meet the requirements specified herein.
6.2.2 Threads shall be unified form UN 2A or 2B or taper as specified in 9.1, there shall be no evidence of cracking or
loosening of parts.
pipe thread (NPT) as specified in ASME Standard B1.1.
F 1836M – 97 (2007)
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.
7.1.3 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,
and heat marks. They shall be free from fins, burrs, and
FIG. 2 Typical Packing Assembly 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 assem-
7.1.2 Ruggedness—When stuffing tubes are subjected to a
mechanical abuse test as specified in 9.2, there shall be no blies shall be free of voids, pin holes, flash, or other imperfec-
cracking, breaking, distortion, or damage to the sample. tions, that may impair their serviceability.
F 1836M – 97 (2007)
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 0.340 0.390 8.64 9.91 -009 0.926 0.956 23.52 24.28
-004 0.375 0.425 9.53 10.80 -010 0.776 0.806 19.71 20.47
-005 0.422 0.472 10.72 11.99 22-001 1.418 1.458 36.02 37.03
3 18-018 0.410 0.472 10.41 11.99 -002 1.460 1.500 37.08 38.10
19-001 0.450 0.500 11.43 12.70 -003 1.510 1.566 38.35 39.78
-002 0.497 0.547 12.62 13.89 -004 1.570 1.610 3
...