1、MIL-IL22129C 15 May 1962 SUPERSEDING 23 February 1961 MIL-I-22129B(SHEPS) MILlTARY SPECIFICATION INSULATION TUBING, ELECTRICAL, POLYTETRAFLUOROETHYLENE RESIN, NONRIGID This specification has been approved by the apartment of Defense and is man- datory for use by the Departments of the Army, the Navy
2、, and the Air Force. 1, SCOPE l. 1 This specification covers nonrigid polytetrafluoroethylene resin tubing for electrical insulating pur- poses. 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of invitation for bids, form a part of this specification to the extent
3、 specified herein: I. . SPECIFICATIONS FEDERAL VV-1-530 - Insulating Oil, Electrical (fpr Transformers, Switches, and Circuit Breakers). STANDARDS MILITARY MIL-STD-104 - Limits for Electrical Insulation Color. MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes. (Copies of spec
4、ifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the con- tracting officer .) 2.2 Other publications. - The following documents form a part of this specificatio
5、n to the extent specified herein. Unless oaerwise indicated, the issue in effect on date of invitation for bids shall apply. AMERICAN SOCIETY FOR TESTING MATERIALS STANDARDS. D876 - Methods of Testing Nonrigid Vinyl Chloride Polymer Tubing (Tentative) - 60T. D1675 - Testing Electrical Grade Polytetr
6、afluoethylene Tubing mentative) 59T. (Application for copies should be addressed to the American Society for Testing Materials, 1916 Race Street, Philadelphis 3, Pa.) OFFICIAL CLASSIFICATION COMMFTTEE Uniform Freight Classification Rules. (Application for copies should be addressed to the Official C
7、lassification Committee, 1 Park Avenue at 33rd Street, New York 16, N.Y.) S REQUIREMENTS 3.1 Material. - The tubing shall be made of polytetrafluoroethylene resin. S. 1.1 Uniformity. - All tubing in each lot shall be uniform in texture, color, and finish. THIS DOCUMENT CONTAINS 6 PAGES. Provided by
8、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-“ -“ “. 3.1.2 Defects. - The tubing shall be clean, smooth, and free from foreign material (except pigments when colored), and from imperfections detrimental to fabrication, appearance, or performance of parts, 3.1
9、.3 Color. - Unless otherwise specified (see 6.2), the tubing shall be natural in coldr. Natural tubing can vary from a water white to a straw yellow and range in transparency from translucent to opaque. Colored tubing shall conform to Standard MIL-STD-104. 3.2 Property values.- The tubing shall conf
10、orm to the property values specified in table I. 3.3 Dimensions and tolerances. - 3.3.1 Lengths. - Unless otherwise specified, the footage of tubing on a reel or in a coil shall conform to table II (see 6.2). 33.2 Inside diameters and wall thicknesses. - Unless otherwise specified, tubing shall be f
11、urnished in the standard inside diameters and wall thicknesses shown in table III as specified (see 6.2). 3.3.3 Concentricity. - The minimum percent concentricity of the tubing, whendetermined as specified in 4.5.2, shall be 70 percent. .- 3.4 Workmanship. - The material shall be manufactured and pr
12、ocessed in a careful and workmanlike manner, in accordance with good practice. Table I - Property values for tubing. -0PertY to be tested reference Test Value Nominal Conditioning Unit of value procedure required Inch wall thick- io% I .o20 17,000 11,500 14,600 16,300 Dielectric breakdown: . .016 Vo
13、lts (min.) C-96/23/0 4.5.3 Dielectric breakdown All thick- Percent of dry C-96/23/96 4.5.3 Dielectric Breakdownl All thick- Variability 30 nesses Percent(max.) C-96/23/0 4.5.3 value obtained nesses ontest (min.) 85 Lengthwise shrinkage Stress at 200 percent 1 - Percent(max.) E-2/300 4.5.4 elongation
14、/ 4.5.5 C-96/23/50 P.8.i. (max.) - - Each of the five specimens shall elongate at least 200 percent; otherwise, the material shall be con- #or thickness not shown, the dielectric breakdown shall be that given for the nearest thickness shown. 2,500 “- P.s.i. (min.) 6,000 . e sidered as failing to con
15、form to the specification. Table II - Tubing lengths. Minimum length coil reel Minimum length AWG size number in feet per in feet per 30 to 22, inclusive 20 to 17, inclusive 1 , O00 li; -“ 10 to O, incltlsive 200 16 to 11; inclusive 500 -“ -“ “he shortest piece in the coil shall not be less than 3 f
16、eet in length. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-1-22121, 4. QUALITY ASSURANCE PROVISIONS 4.1 Unless otherwise specified in the contract or purchase order, the supplier is responsible for th performance of all inspection requirement
17、s a8 specified herein. The Government reserves the right to per- form any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.2 Sampling for acceptance inspection. - 4.2.1 E,- A lot of tub
18、ing shall consist of all tubing of the same size offered for delivery at the same time. 4.2.2 Sampling for visual and dimensional examination. - Sample reels or coils of tubing shall be se- lected in accordance with Standard MIL-STD-105 at inspection level II from each lot for the visual and dimensi
19、onal examination specified in 4.3.1. Table III - Inside diameters and wall thicknesses of tubing (AWG sizes). AWG size number 30 28 26 24 22 20 19 18 17 16 . 15 14 13 12 11 10 9 8 8 7 6 5 4 3 2 2 1 O T Inside diameter (inches) I Wall thickness (inches) 0.010 .O13 .O16 .o20 ,025 .O39 .O43 .O40 .; 045
20、 .O51 .057 .o64 .O72 .o81 . .o91 .lo2 .114 I120 .129 .144 .162 .182 .204 .250 .289 i229 258 Minimum Minimum Maximum .325 I .347 .O16 0.015 . o19 .o22 .O27 ,032 . O40 . O44 .O49 .O54 .o61 .O67 .O74 .O82 .O91 .lo1 .112 ,124 .130 -141 .158 .178 ,198 .224 .249 .260 .278 ,311 0.007 .o07 ,007 ;o10 .o10 ,0
21、13 .O13 .O13 .O13 .O13 .O13 .O13 ,013 .O13 .O16 ,016 .O16 .O16 .O16 .O16 .O16 .O16 .O16 .O16 .O16 013 ,013 0.011 .Oll .o11 .O14 ,014 . o19 . o19 . o19 o19 . o19 . o19 . o19 . o19 . O19 . o19 . O19 .O24 .O24 .O24 .O24 .O24 .O24 .O24 .O24 .O24 .O24 024 0.009 . O09 .o09 .o12 012 .O16 .O16 .O16 .O16 .O1
22、6 .O16 .O16 .O16 .O16 .O16 016 .o20 020 .o20 . 020 .o20 .o20 .o20 .o20 .o20 .o20 .o20 4.2.3 Sampling for acceptance tests. - Three sample reels or coils shall be selected from each lot for tests a8 specified in 4.3.2. The mnimum quantity taken from each sample reel or coil shall be 32 feet. Y 4.3 Ac
23、ceptance inspection. - 4.3.1 Visual and dimensional examination. - Each sample selected in accordance with 4-2.2 shall be visually and dimensionally examined to verify conformance with the requirements in 3.1, 3.3 and 3.4. Any reel or coil having one or more defects shall be rejected, It the number
24、of defective samples exceeds the acceptable number for the appropriate sampling plan of Standard MIL;-STD-105 at acceptance quality level (AQL) 2.5 percent, the lot represented by the samples shall be rejected. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
25、om IHS-,-,-MIL-I-22129c r. 4.3.2 Acceptance tests. - The three samples selected in accordance with 4.2.3 shall be subjected to the tests specitied in table IV. Results shall be averaged for each sample to determine conformance with this specification. If one or more of the samples fail one or more o
26、f the tests, the entire lot shall be re- jected. 4.3.3 Reports of acceptance inspection. - Three copies of the acceptance .inspection report shall be forwarded to the bureau or agency concerned. 4.4 Conditioning.- The tubing shall be conditioned before being tested, as specified in table I. 4.4.1 Eq
27、uipment.- Conditioning chambers and baths shall be such as to maintain the specified tem- perature plus or minus 2OC. and the specified relative humidity plus or minus 2 percent. 4.4.2 Designation. - Conditioning procedures shall be designated as follows: (a) A capital letter indicating the general
28、condition of the specimen; that is, humidity, immersion, (b) A number indicating in hours the duration of the conditioning. (c) A number indicating in degrees centigrade the conditioning temperature. cd) A number indicating relative humidity whenever relative humidity is controlled. (Relative and te
29、mperature conditioning. . humidity obtained over calcium chloride shall be taken as zero.) Table IV - Acceptance tests. a Test Requirement Dielectric breakdown 4.5.3 3.2 - Lengthwise shrinkage 4.5.5 3.2 Stress at 200 percent elongation 4.5.4 3.2 Conditioning prior to test (see 4.4) C-96/23/0 C-96/23
30、/96 E-2/300 C-96/23/50 I Minimum number of test specimens sample 4.4.2.1 The numbers shall be separated from each other by slant marks, and from y 4.6 bpection of preparation for delivery.- Sample packages and packs shall be tested for compliance with section 5. 5. PREPARATION FOR DELIVERY 5.1 Domes
31、tic shipment and early equipment installation and for storage of shipboard repair parts. - 5. l. 1 Insulation tubing, electrical. - 5.1 .l. 1 Preservation and packaging. - Preservation and packaging shall be sufficient to afford adequate protection against corrosion, deterioration, and physical dama
32、ge during shipment from the supply source to the using activity, and until early installation. 5. l. l. 2 Packing. - Packing shall be accomplished in a manner which will itsure acceptance by common carrier and will afford protection against physicai or .mechanical damage during direct shipment from
33、the Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-22129C supply source to the usiag activity for early installation. The shipping containers or method of packing shall conform to the Uniform Freight Classification Rules and Regulations or oth
34、er carrier reguiations as appli- ._. cable to the mode of transportation. 5. l. l. 3 Marking. - Shipment marking information shall be provided n interior packages and exterior shipping containers ir! accordance with the contractors commercial practlce. The information shall include nomenclature, Fed
35、eral rtcck ilumber or manufacturers part number, cor.tract or order number, contrac- ters name and destination. 5.2 Domestic shipment and storage or overseas shipment. - The requirements ad levels of preserva- . tion, packaging, packing and marking for shipscnt shall be specified by the procuring ac
36、tivity (see 6.2). (5.2.1 Thc following provides various levels of protection during domestic shipment and storage or overseas shipmefit, which may be required when procurement is made by a Government activity (see 6.2). 5.2.1.1 Packaging.- 5.2.1.1.1 Level A.- Tubing furnished on reels or in coil for
37、m shall be processed as follows: 5.2.1.1. l. 1 Reels. - Reels shall be individually wrapped in not less than 30-pound basic weight kraft paper and stxqrtly sealedwith minimum 2-inch wide tape confcrmingtoSpecification UU-T-116, The tape shall be applied in such lengths that it will completely encirc
38、le the reel and lap itself at least 2 inch.es. 5.2. l. l. 1 2 Coils. - Coils shall be completely wrapped with krait paper and secured by taping, tying, 5.2. l. l. 1.3 Alternatively, reels of tubkgmay be individually packaged in a pladc film-. Bag or other suitable means. closure shall be effected by
39、 heat sealhg, adhesive, or other suitable means. 5.2.1.1. !. 4 Unit containers. - Reels or coils shall be further packaged in folding or Set-up paper- board Or fiber boxes conforming to Specification PPP-B-566, PPP-B-676, or PPP-B-836, respectively, at . the option of the contractor. Box closure sha
40、ll ,be as specified in the applicable box specificltion or appendix thereto 5.2.1.2 Packing.- 5.2. l. 2.1 Level A. - Reels and coils of tubing, packaged as specified (see 6.2), Phall be packed in overseas type, wood-cleated fiberbcard, nailed wood, wirehund wood, fiber, wood-cleated veneer paper ove
41、rlaid, or wood-cleated plywood boxes conforming to Specification PPP-B-591, PPP-8-621, PPP-B-S85, PPP-B-636 (class 2), PPP-B-576, or PPP-B-601, respectively, at the opticn of the contractor. Udess otherwise specified (set? 6.2), shipping containers shall have case hers conforming to Specification Ma
42、- L-10537, and shall be closed and sealed in accordance with the appendix thereto. Case liners for boxes conforrcing to Specification PPP-B-636 may be omitted, provided all center and edge seams and manufac- turers joint are waterproofed with tap in accordance with the appendix to Specification PPP-
43、B-636. Boxes shall be closed and strapped in accordance wXh the applicable box specification or appendix thereto. The gross weight of wood or wmd-cleated boxes shall not exceed 200 pounds; fiber boxes shall not exceed the weight limitations of the applicable box specification. 5.2.1.2.2 Level B. - R
44、eels or coils of Qbing, packaged a8 specified (see 6,2), shall be packed in domestic tspe wood-cleafed fiberboard, nailed W fiber boxes shall not exceed the weight limita- tions of the applicable box specification. . - 5.2 l. 2.2 Level C. - Reels or coils of tubing, packaged a8 specified (see 6.2),
45、shall be packed in containers which will insure acceptance by common carrier and safe delivery at destination. shipping containers shdl-conply to the Uniform Freight Classirication Rules or ather regplations as applicable to t!e mde of transportation. Provided by IHSNot for ResaleNo reproduction or
46、networking permitted without license from IHS-,-,-MIL-t22129C 5.2.1.3 Marking. - In addition to any special marking required by the contract or order, or herein, interior and exterior shipping containers shall be marked in accordance with Standard MIL-STD-129.) 6. NOTES 6.1 Intended use. - The tubin
47、g covered by this specification is intended for applications involving high -I . temperature, high frequencies, or both. Tubing covered by this specification possesses excellent electrica! properties which remain practically constant over a wide range of frequencies, temperatures, and humiditie and
48、has a very low loss factor. Except in well defined special applications the tubing should not be used at . temperatures in excess of 275C. 6.2 Ordering data. - Procurement documents should specify the following: (a) Title, number, and date of this specification. (b) Color, if required (see 3. l. 3).
49、 (c) Dimensions required (see 3.3): (1) Number of fett required. (2) Number of feet in single reel or coil (see 3.3.1). (3) AWG size number (see 3.3.2). (4) Nominal wall thickness (see 3.3.2). 5.1 (see 5.2). (d) Preservation, packaging, packing, or marking requirements other than those required by , (e) Whether shipping containers shall have case liners (see 5.2. I. 2.1). Notice. - When Government drawings, specifications, or other and the fact that the Government
