ASTM F1836M-97

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

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 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.

General Information

• Status: Historical
• Publication Date: 09-Nov-1997
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.10 - Electrical

Standards Content (Sample)

Designation: F 1836M – 97 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
1
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.
1. Scope for the sealing of cable penetration into shipboard enclosures
while maintaining or exceeding the degree of protection for
1.1 This specification covers the general requirements for
which the enclosure is rated.
nylon stuffing tubes and packing assemblies. Nylon stuffing
3.1.2 packing assembly, n—the compressible insert for the
tubes are intended for making electric cable penetrations in
nylon stuffing tube. It consists of one neoprene bushing and
marine shipboard enclosures for electrical equipment. The
three nylon washers.
following types are suitable for both thin-wall enclosures up to
3 3.1.3 enclosure, n—an electrical panel, cabinet, junction
5mm( ⁄16 in.) thick and thick-wall enclosures, bulkheads, and
3 3 box, light fixture, electrical equipment, control box, or panel.
decks of 5 to 19 mm ( ⁄16 to ⁄4 in.) thick.
1.2 This specification does not cover metal stuffing tubes.
4. Classification
1.3 This standard does not purport to address all of the
4.1 Nylon stuffing tubes shall be of the following types (see
safety concerns, if any, associated with its use. It is the
Fig. 1):
responsibility of the user of this standard to establish appro-
4.1.1 Type 1—straight—Unified Form Thread.
priate safety and health practices and determine the applica-
4.1.2 Type 2—90°—Unified Form Thread.
bility of regulatory limitations prior to its use.
4.1.3 Type 3—NPT—American Standard Pipe Thread.
2. Referenced Documents 4.1.4 Type 4—Y—Unified Form Thread.
2.1 ASTM Standards:
5. Ordering Information
D 2000 Classification System for Rubber Products in Auto-
2 5.1 Orders for stuffing tubes under this specification shall
motive Applications
include the following:
D 4066 Specification for Nylon Injection and Extrusion
3 5.1.1 Type (see 4.1).
Materials (PA)
5.1.2 Part number (see Table 1).
2.2 NEMA Standards:
5.1.3 Packing assembly size (see Fig. 2 and Table 2).
Standard 250 Enclosures for Electrical Equipment (1000 V
4 5.1.4 The O-ring included in the stuffing tube assembly has
Max)
a finite shelf life. If the stuffing tube assembly is used after the
2.3 ASME Standard:
shelf life has expired, the O-ring should be replaced, using the
ASME B1.1 Unified Inch Screw Threads (UN and UNR
5
appropriate size listed in Table 1.
Thread Form)
2.4 IEC Standard
6. Materials and Manufacture
Standard 68-2-6 Environmental Testing–Part 2: Tests–Test
6 6.1 Materials:
FC: Vibration (Sinusoidal) Sixth Edition
6.1.1 Polyamide (nylon) molding plastic material shall be
3. Terminology Group 1, Class 8, Grade 1 in accordance with Specification
D 4066.
3.1 Definitions of Terms Specific to This Standard:
6.1.2 Synthetic rubber (neoprene) shall be in accordance
3.1.1 nylon stuffıng tube, n—a marine electrical fitting used
with Classification D 2000, M2, BC, 410, A14, B14, C12, and
F19.
1
This specification is under the jurisdiction of ASTM Committee F-25 on Ships
6.2 Manufacture:
and Marine Technology and is the direct responsibility of Subcommittee F 25.10 on
6.2.1 Molded nylon parts, such as body, washers, locknut,
Electrical.
and cap, shall meet the requirements specified herein.
Current edition approved Nov. 10, 1997. Published September 1998.
2
6.2.2 Threads shall be unified form UN 2A or 2B or taper
Annual Book of ASTM Standards, Vol 09.02.
3
Annual Book of ASTM Standards, Vol 08.02.
pipe thread (NPT) as specified in ASME Standard B1.1.
4
Available from the National Electrical Manufacturers Association, 1300 N.
6.2.3 Neoprene parts, such as bushing and plug, shall meet
17th St., Suite 1847, Rosslyn, VA 22209.
5
the requirements specified in Classification D 2000, and when
Available from the International Electrotechnical Commission, 1 rue de
Varembe, Geneva, Switzerland. assembled in a stuffing tube, shall meet the performance
6 th
Available from the American Society of Mechanical Engineers, 345 E. 47 St.,
requirements specified herein.
New York, NY 10017.
1

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F 1836M
FIG. 1 Stuffing Tube Types
7. Other Requirements edges or surfaces, blisters, uneven surfaces, scratches, dents,
and heat marks. They shall be free from fins, burrs, and
7.1 Performance Requirements:
unsightly finish caused by chipping, filing, or grinding without
7.1.1 Vibration resistance—When stuffing tubes are tested
subsequent buffing or polishing. All molded nylon parts shall
as specified in 9.1, t
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