1、 MIL-S-19b22F m 99999Ob 1700195 314 m INCH- POUND J MIL-S-l9622F(SH) 11 December 1992 SUPERSEDING 24 June 1986 (See 6.10) MIL-S-l9622E(SH) r) e i MILITARY SPECIFICATION STUFFING TUBES, NYLON; AND PACKING ASSEMBLIES; GENERAL SPECIFICATION FOR This specification is approved for use by the Naval Sea Sy
2、stems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the general requirements for nylon stuffing tubes for shipboard electrical cables, which include tube types suitable for both th
3、in wall enclosures up to 3/16-inch thick and wall enclosures of 3/16- to 3/4-inch thick. 1.2 Classification. Nylon stuffing tubes are of the following types as specified (see 3.1 and 6.2): Straight - Unified form thread 90 degrees - Unified form thread NPT - American Standard Pipe Thread Y - Unified
4、 form thread 1.2.1 Sizes. Sizes are as specified (see 3.1 and 6.2). Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 05442, Department of the Navy, 2531
5、National Center Bldg 3, Washington, DC 20362-5160 by using the self- addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. FSC 5975 AMSC N/A DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided
6、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-19622F 9999906 1700196 250 . .* MIL- S - 19622F( SH) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards. and handbooks, The following specifi- cations, standards, and handbo
7、oks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICAT
8、IONS MILITARY MIL-S-901 - Shock Tests, H.I. (High-1,mpact) Shipboard Machinery, Equipment, and Systems, Requirements for. Extruded Shapes, General Specification for. and Provisioned Items (Repair Parts): Packaging of. MIL-R-6855 - Rubber, Synthetic, Sheets, Strips, Molded or MIL-E-17555 - Electronic
9、 and Electrical Equipment, Accessories, (See Supplement 1 for list of associated specifications.) STANDARDS FEDERAL FED-STD-H28 - Screw-Thread Standards for Federal Services. FED-STD-H28/2 - Screw-Thread Standards for Fedsral Services Section 2 Unified Inch Screw Threads - UN and UNR Thread Forms. S
10、ection 6 Gages and Gaging fo Unified Screw Threads - UN and UNR Thread Forms. Section 7 Pipe Threads, General Purpose. FED-STD-H28/6 - Screw-Thread Standards for Federal Services FED-STD-H28/7 - Screw-Thread Standards for Federal Services MILITARY MIL-STD-108 - Definitions of and Basic Requirements
11、for Enclosures for Electric and Electronic Equipment. MIL-STD-167-1 - Mechanical Vibrations of Shipboard Equipment (Type I - Environmental and Type II - Internally Excited). Component Parts. Surface Ships and Submarines (Penetrations). MIL-STD-202 - Test Methods for Electronic and Electrical DOD-STD
12、-2003-3 - Electric Plant Installation Standard Methods for (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, BLDG. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2 Provided by IHSNo
13、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-LSb22F 9999906 L7OOL97 L97 2.2 Non-Government Dublications. The following document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are
14、DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 3029 - Standard Tes
15、t Methods for Impact Resistance of Rigid Plastic Sheeting or Parts by Means of a TUP (Falling Weight). (DOD adopted) Materials (PA). (DOD adopted) D 4066 - Standard Specification for Nylon Injection and Extrusion (Application for copies should be addressed to the American Society for Testing and Mat
16、erials, 1916 Race Street, Philadelphia, PA 19103.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services.) 2.3 Order of pre
17、cedence. In the event of a conflict between the text of this document and the references cited herein (except for specification sheets), the text of this document takes precedence, Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obta
18、ined. 3. REQUIREMENTS 3.1 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the applicable specification sheet. In the event of any conflict between the requirements of this specification and the specification sheet, the latter shall govern. 3
19、.2 First article. When specified (see 6.2), a sample shall be subjected to first article inspection (see 6.4) in accordance with 4.4. 3.3 Materials. 3.3.1 Polyamide (nylon). Polyamide (nylon) molding plastic material shall be group 1, class 8, grade 1 in accordance with ASTM D 4066 (see 6.3). 3.3.2
20、Synthetic rubber (neoprenel. Synthetic rubber (neoprene) shall be class 2, type A, grade 40 in accordance with MIL-R-6855. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-19622F 9 999990b 1700198 023 9 MIL- S - 19622F( SH) .- 3.3.3 Recovered
21、materials. Unless otherwise specified herein, all equip- ment, material, and articles incorporated in the products covered by this specification shall be new and may be fabricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended us
22、e. The term “recovered materials“ means materials which have been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials. None of the above shall be interpreted to mean that the use of used or rebuilt products is allowed under
23、this specification unless otherwise specifically specified. 3.4 Construction. The stuffing tubes and packing assemblies shall be of the construction and physical dimensions as specified (see 3.1). 3.4.1 Molded nylon parts. Molded nylon parts (body, washers, locknut and cap) shall meet the requiremen
24、ts specified herein. 3.4.1.1 Stress relief. Measures shall be taken in molding or processing plastic to ensure that stre.cs build-up does not occur or is satisfactorily treated to relieve these stresses to prevent deterioration or failure of a part or assembly. The stress-relieving process shall be
25、as provided by the contractor of the raw materials. 3.4.1.2 Threads. Threads shall be unified form (UN), class 2A or 2B or taper pipe thread (NPT) as specified in FED-STD-H28/2 and FED-STD-H28/7, respectively. Type (UN or NPT), nominal size, and threads per inch shall be as specified on the applicab
26、le specification sheet. The UN thread gauging shall be GO-NOT GO in accordance with FED-STD-H28/6. The NPT gauging shall be in accordance with FED-STD-H28/7. 3.4.2 Neoprene parts. Neoprene parts (bushing and plug) shall meet the requirements in accordance with MIL-R-6855 and, when assembled in a stu
27、ffing tube, shall meet the performance requirements specified herein. 3.4.3 O-ring (preformed packing,). The O-ring is identified on the applicable specification sheet but shall noc be furnished with the stuffing tube or stuffing tube assembly. The O-ring shall be provided separately by the installi
28、ng activity in accordance with DOD-STD-2003-3. 3.4.4 Level of effectiveness. A complete stuffing tube with O-ring installed and properly assembled to a cable or with plug installed shall be submersed (15 foot) in accordance with MIL-STD-108. 3.5 Performance. 3.5.1 Vibration. There shall be no eviden
29、ce of cracking, or loosening of parts when stuffing tubes are tested as specified in 4.7.1. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-1Sb22F 99999Ob 1700199 TbT MIL-S-I9622F(SH) 3.5.2 Shock. There J shall be no evidence of cracking, bre
30、aking, distortion, or loosening of parts when I stuffing tubes are tested as specified in 4.7.2. I 3.5.3 Falling ball impact. There shall be no evidence of mechanical damage I when stuffing tubes or nylon parts are tested as specified in 4.7.3. i 3.5.4 Torsion. There i when stuffing tubes are tested
31、 as specified in 4.7.4. shall be no evidence of cracking, breaking, distortion or damage to the threads 3.5.5 Effectiveness of seal. There shall be no evidence of leakage through or around the stuffing tubes when stuffing tubes are tested as specified in 4.7.5. 3.5.6 Porositv. There shall be no evid
32、ence of air or gas pockets, resin pockets, solvent areas, area lacking resin, uncured areas, delaminations and soft spots when stuffing tubes or nylon parts are tested as specified in 4.7.6. Some inner porosity is permitted provided that the stuffing tube is not weakened excessively as determined by
33、 the shock and falling ball impact tests specified in 4.7.2 and 4.7.3. This porosity shall not penetrate the outer surface of the stuffing tube. 3.6 Identification. Identification of part numbers shall be as shown on the applicable specification sheet in 1/8-inch high raised letters. Except where mo
34、lds have been built with the identification markings of a superseded drawing or specification sheet, these markings will be accepted. New molds or molds that require rework shall contain markings as specified on the applicable specification sheet. 3.7 Workmanship. Stuffing tubes shall be free from w
35、arp, cracks, chipped edges or surfaces, blisters, uneven surfaces, scratches, dents and heat marks. They shall be free from fins, burrs and from unsightly finish caused by chipping, filing, or grinding without subsequent buffing or polishing. All molded nylon parts shall be thoroughly cleaned of ann
36、ealing mediums. Packing assemblies shall be free of voids, pin holes, flash or other imperfections . 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection re
37、quirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Gov
38、ernment reserves the right to perform any of the inspections set forth in this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS
39、-,-,-flIL-S-19622F 999990b L700200 501, MIL-S-l9622F(SH) 4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of
40、any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of the manufacturing operations, is
41、an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. 4.2 Classification of inspections. The inspection requirements specifi
42、ed herein are classified as follows: (a) First article inspection (see 4.4). (b) Quality conformance inspection (see 4.5). 4.3 Inspection conditions. Unless otherwise specified herein, all inspections shall be performed under test conditions in accordance with MIL-STD-202. 4.4 First article inspecti
43、on. First article inspection shall be performed on sample units which have been produced with equipment and procedures normally used in production . Acceptance will be allowed for all sizes of the individual parts that make up the stuffing tube assembly of the type tested and accepted (see 4.4.1). 4
44、.4.1 Sample size. Two stuffing tubes of each type (see 1.2) shall be subjected to first article inspection. One tube shall be one of the two smallest sizes and the other tube shall be one of the two largest sizes specified on the applicable specification sheets. 4.4.2 Inspection routine. The sample
45、shall be subjected to the inspections as specified in table I in the order shown. TABLE I. First article inspection. Inspection Visual and dimensional Vibration Shock Falling ball impact Torsion Effectiveness of seal Porosity (nylon parts) examination (nylon parts) Requirement 3.1, 3.3, 3.4, 3.6, an
46、d 3.7 3.5.1 3.5.2 3.5.3 3.5.4 3.5.5 3.5.6 Test method - 4.6.1 4.7.1 4.7.2 4.7.3 4.7.4 4.- .5 4.7.6 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-fiIL-S-19622F m 9999706 1700201 448 4.5 Oualitv conformance inspection. Quality conformance inspectio
47、n of a nylon product shall consist of groups A and B inspections (see 4.5.2 and 4.5.3). Quality conformance inspection of a neoprene product shall be in accordance with MIL-R-6855. a 4.5.1 Inspection lot. An inspection lot may consist of one of the following products that are produced under essentia
48、lly the same conditions, and offered for inspection at one time: (a) A part covered by a single specification sheet (see 3.1). (b) A stuffing tube consisting of a body, locknut, and cap (see 3.1). 4.5.2 Group A insDection. Group A inspection shall consist of the inspections as specified in table II.
49、 4.5.3 TABLE II. Group A inspection. Inspection Test method Requirement Visual and dimensional 4.6.1 3.1, 3.3, 3.4, examination 3.6, and 3.7 Group B inspection. Group B inspection shall consist of the inspections as specified in table III with samples selected from inspection lots that have passed group A inspection. TABLE III. Group B inmection Inspection Test method Requirement Falling ball impact Torsion I/ Effectiveness of seal L/ Porosity 4.7.3 3.5.3 4.7.5 3.5
