1、7 ( MIL-1-240638 Li7 7777906 0274354 b = MIL-I-2463B (SH) 15 December 1982 SUPERSEDING MIL-I-Z4063A(SHIPS) 29 December 1975 (See 6.8) MILITARY SPECIFICATION INSERT SETS, SOUND ISOLATION FOR RISIC-1 FLEXIBLE CONNECTORS This specification is approved for use by the Naval Sea Systems Command, Departmen
2、t 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 elastomeric inserts used with rubber insert sound isolation coupling (RISIC-1) flexible connectors. 1.2 Classification. The elastomeric insert sets shal
3、l be of the styles, durometer ratings, and sizes specified in 1.2.2, and shall be designated by the applicable definitive Military Specification part number. 1.2.1 Insert set designation. following form (see 6.2.1 and 6.5): Insert sets shall be designated in the M24063 - XX iT Military Specification
4、 code number- Style, durometer rating, and size code number (see 1.2.2) 1.2.2 Style, durometer rating, and size. The style, durometer rating, and size of the insert set are identified by two digits (see table 1) Beneficial comments (recommendations, additions, deletions) and any pertinent data which
5、 may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
6、FSC 4730 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - .- MIL-I-24063B Li7 7777706 0574355 B W TABLE I. Code number to style, durometer rating, and size, Nominal pipe size 112 3/4 1 1-114 1-1 I2 2 2-112 3 3-112 4 5 6 8 8 (14 o.de) 12-7/16 0.d.)
7、Style A (-see figure 1) 40 duro- meter o1 02 03 04 05 06 07 08 o9 10 11 12 13 14 80 duro- meter 17 18 19 20 21 22 23 24 25 26 27 28 29 30 2. APPLICABLE DOCUMENTS 2.1 Government documents. Style B (see figure 2) 40 duro- meter 33 34 35 36 37 38 39 40 41 42 43 44 80 duro- meter 49 50 51 52 53 54 55 56
8、 57 58 59 60 Style D (see figure 3) 40 duro- meter 70 72 80 duro- meter 86 88 2.1.1 Specifications and standards. Unless otherwise specified, the following specifications and standards of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) speci
9、fied in the solicitation, form a part of this specification to the extent specified herein. SPECIFICATIONS FEDERAL QQ-B-639 - Brass, Naval, Flat Products (Plate, Bar, Sheet, QQ-S-781 - Strapping, Steel, and Seals. PPP-B-601 - Boxes, Wood, Cleated, Plywood, PPP-B-621 - Boxes, Wood, Nailed and Locked
10、Corner. PPP-B-636 - Boxes, Shipping, Fiberboard. and Strip). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-1-24063B 47 ,- 9999704_927Ll356 T W MILITARY MIL-P-116 - Preservation-Packaging, Methods of. STANDARDS MILITARY MIL-STD-105 - Sampling
11、Procedures and Tables for Inspection MIL-STD-129 - Marking for Shipment and Storage. MIL-STD-177 - Rubber Products, Terms for Visible Defects of. MIL-STD-407 - Visual Inspection Guide for Rubber Molded by Attributes. Items. . (Copies of specifications and standards required by contractors in connect
12、ion with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Other publications. The following documents form a part of this The issues of the documents specification to the extent specified herein. which are indicated as Do
13、D adopted shall be the issue listed in the current DoDISS and the supplement thereto, if applicable. NATIONAL MOTOR FREIGHT TRAFFIC ASSOCIATION, INC. AGENT National Motor Freight Classification. (Application for copies should be addressed to the National Motor Freight Traffic Association, Inc., ATA
14、TRAFFIC Dept., 1616 “P“ Street, N.W., Washington, DC 20036.) UNIFORM CLASSIFICATION COMMITTEE AGENT Uniform Freight Classification Ratings, Rules and Regulations. (Application for copies should be addressed to the Uniform Classifica- tion Committee Agent, Tariff Publication Officer, Room 1106, 222 S
15、outh Riverside Plaza, Chicago, IL 60606.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) B 171 - Copper-Alloy Condenser Tube Plates, Spec. for. D 395 - Rubber Property - Compression Set, Test for. D 412 - Rubber Properties in Tension, Test for. D 624 - Rubber Property - Tear Resistance, Test for.
16、 (DOD (DOD adopted). (DOD adopted). adopted). . D 2240 - Rubber Property - Durometer Hardness, Test for. (DOD adopted). -. (Applicationfor copies should be addressed to the American Society for Testingrand Materials, 1916 Race Street, Philadelphia, PA 19103.) E.I. DUPONT DE NEMOURS Bulletin E-O5440
17、for 958-200 Series TFE-S Non-stick Finishes. (Application for copies should be addressed to the E.I. DuPont De - - -_ Nemours and Company, DuPnt Building, Wilmington, DE 19898.) O 3 .-y _ 1 - ,. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-HIL-I-i
18、2Y063B Y7 m 9499906 027Y357 L W (Industry association specifications and standards are generally available for reference from libraries. technfcal groups and using Federal agencies.) They are also distributed among 2.3 Order of precedence. of this specification and the references cited herein, the t
19、ext of this specification shall take precedence. In the event of a conflict between the text 3. REQUIREMENTS 3.1 Materials. 3.1.1 Elastomeric molding stock material. The elastomeric molding stock shall be a nitrite compound that can be compounded and cured to meet the physical properties of table II
20、 when tested as specified in 4.4. suggested formulation for a compound of 80 durometer is given in 6.6. A TABLE II. Physical properties. r- Physical property Tensile strength Hodulus of elasticity (min) at 300 percent elongation (min) Tear (minimum) Elongation (percent Durometer shore A Compression
21、set min) (max) 40 durometer stock 1500 lb/in2 320 lb/in2 110 lb/in2 600 percent 40 +: 3 43 percent 80 durometer stock 2600 lb/in2 1400 lb/in2 225 lb/in2 425 percent 83 ? 3 25 percent Applicable test paragraph 4.4.1.1 4.4.1.2 4.4.1.3 4.4.1.4 4.4.1.5 4.4.1.6 3.1.2 Washer material. and 3) and the washe
22、r that is bonded to the thrust insert (part II of The free washer (part III of figures 1, 2, figures 1, 2, and 3) shall be fabricated of alloy no. 464 as specified in QQ-B-639 or UNS no. C46400 naval brass as specified in ASTM B 171. 3.1.3 Kecovered material. Unless otherwise specified herein, all e
23、quipment, material, and articles incorporated in the products covered by chis specification shall be new and shall be fabricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended use. materials which have been collected or recovered
24、 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 this specification unless otherwise specifically specified. The term “recovered material
25、s“ means 4 4 . - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-a a a MIL-1-240638 47 W 7779706 0274358 3 .- 3.2 Design. An insert set consists of positioning insert (part I), a thrust insert which has a washer bonded to the insert (part II), and
26、a thrust washer (part III); except for the style A, 8 inch nominal size (14 inch outside diameter) insert set (see figure 1) which has two thrust inserts (part 11) and one thrust washer (part III). 3.2.1 Molding. The elastomeric inserts shall be molded and vulcanized.into the shapes (part I and II)
27、shown on figures 1, 2, and 3. Moldings shall be by either preform (see 3.2.1.1) or injection. moldings shall be prohibited. Laminated 3.2.1.1 Preformed molding. If preformed molding is used, the molding stock shall be extruded preform, tubed to a continuous circle with controlled inside diameter (i.
28、d.) and 0.d. and cut to a specific weight to fill the mold cavity. stock. Preform may also be cut from rubber slab or milled 3.2.2 Dimensions. The insert sets shall have the parts and dimensions shown on figure 1 (style A), figure 2 (style B), or figure 3 (style D). The dimensional tolerances shall
29、be as specified in table III. TABLE III. Dimensional tolerances. Dimension (inches) O - 0.499 0.500 - 0.999 1.000 - 1.999 2.000 - 2.999 3.000 - 3.999 4.000 - 4.999 5.000 - 7.999 8.000 and up Fixed (inches) Plus (+) O. 005 O. 005 0.010 0.010 0.015 0.015 o. 020 Multiply dime Minus (-) O. 005 O. 008 0.
30、010 0.015 0.018 0.021 O. 025 ;ion by 0.003 Closure (inches 2) O. 008 0.010 O. 015 o. 020 -e - -e- - - i/ - 21 This table applies to each dimension given on figures 1, 2, and 3 and not the nominal size of the insert set, except for the “A“ dimension for part II which has a tolerance of plus 0.000 - (
31、table III value). A fixed dimension is parallel to the mold parting line or the parting lines of major mold sections. A closure dimension is vertical to the mold parting line or the parting lines of major mold sections. - 31 5 Provided by IHSNot for ResaleNo reproduction or networking permitted with
32、out license from IHS-,-,-MLL-I-24063B 47 M 9979906 0274359 5 i 3.3 Part ILI (free washer) finish. Only the free washer (part III of figures 1, 2, and 3) shall be tetrafluoroethylene (TFE) coated in accordance with DuPont Bulletin E-O5440 covering the TFE 958-200 series coating or equal. gray as spec
33、ified in DuPont Bulletin E-05440, The preferred coating colors are blue, black, or oxford 3.4 Part EI washer bond. The thrust insert (part II) shall have a washer bonded to it as shown on figures 1, 2, and 3. The bond strength of the washer to the thrust insert shall be at least equal to the tensile
34、 strength of the nitrite compound used in the thrust insert. 3.5 Marking. Each insert (parts I and II) shall have the speciication part number, contractors name or trade mark and the quarter of year and year the insert was molded embossed or indelible ink stamped with 3/32 inch (minimum) lettering 0
35、.015 to 0.030 inch high on the surface area indicated on figures 1, 2, and 3. 3.6 Workmanship. Elastomeric inserts shall be free from foreign inclusions, blisters, and voids when examined in accordance with 4.3. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection, Unless otherwise spec
36、ified in the contract or purchase order the contractor is responsible for the performance of all inspection requirements as specified herein. 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 r
37、equirements specified herein, unless disapproved by the Covern- ment, The Government reserves the right to perform any of the inspections set orth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Except as 4.2 Campli
38、ng for quality conformance inspection. 4.2.1 _ Lot. For purposes of sampling, a lot shall consist of all elastomeric inserts rom the same batch of rubber and of the same style. 4.2.2 Sampling for examination. A random sample of inserts of different sizes and parts shall be selected from each lot in
39、accordance with MIL-STD-105, inspection level 11, acceptable quality level (AQL) 2.5 percent, and shall be subjected to the examination specified in 4.3. 4.2.3 Sampling for tests for elastomer stock. Samples for tests of elastomer stock shall be standard ASTM specimens, and shall be subjected to the
40、 tests specified in 4.4.1.1 through 4.4.1.4. Specimens shall be preparad for each batch of elastomer. 4.2.4 Sampling for durometer shore A and compression set. A random sample of inserts of different sizes and parts shall be selected from each Lot in accordance with MIL-STD-105, inspection level LI,
41、 AQL 2.5 percent, and shall be subjected to the tests specified in 4.4.1.5 and 4.4.1.6. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-2LIOb3B 47 7777706 0274360 I M :- 4.3 Examination. Each of the sample inserts selected in accordance with
42、4.2.2 shall be dimensionally and visually examined as specified in 4.3.1 and 4.3.2. dimensional defects shall be rejected and if the number of defective inserts in any sample exceeds the acceptance number for that sample, the lot represented by the sample shall be rejected. Any insert in the sample
43、containing one or more visual or 4.3.1 Dimensional examination. Inserts shall be examined to determine conformance to the dimensional and tolerance requirements as specified in figures 1, 2, 3,.and table III. 4.3.2 Visual examination. MIL-STD-407 shall be used to determine and evaluate defects throu
44、gh visual examination (a superficial line that has no apparent depth and does not open upon flexing or twisting is acceptable for delivery). Each sample (part I) insert shall be hand flexed and twisted and the surface of the sample insert shall show no evidence of the following defects; inserts with
45、 bonded washer, (part II), shall be inspected for evidence of the following defects (see MIL-STD-177 for definition of terms): (a) Flash lines. (b) Knit lines and knit marks. (c) Surface voids. (d) Surface punctures. (e) Backrind. (f) Inclusions. (g) Washer bonded to insert, part II only. 4.4 Tests.
46、 4.4.1 Tests for elastomer stock. Elastomer stock used in t.,e mo ing of the elastomeric inserts shall be tested as specified in 4.4.1.1 through 4.4.1.4 to determine conformance with 3.1.1. 4.4.1.1 Tensile properties. Test specimens, prepared in accordance with 4.2.3, shall be subjected to a tensile
47、 test in accordance with ASTM D 412. 4.4.1.2 Modulus of elasticity. Test specimens, prepared in accordance with 4.2.3, shall be tested in accordance with ASTM D 412. 4.4.1.3 Tear. Test specimens shall be prepared in accordance with 4.2.3 and ASTM D 624 to conform to die type C and tested in accordan
48、ce with ASTM D 624. 4.4.1.4 Elongation. Test specimens, prepared in accordance with 4.2.3, shall be tested in accordance with ASTM D 412. 4.4.1.5 Durometer shore A. Sample elastomeric inserts, selected in accordance with 4.2.4, shall be tested in accordance with ASTM D 2240 to determine compliance w
49、ith 3.1.1. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-I-2LiOb3B Li7 M 99499Ob 02743bL 3 9 4.4.1.6 Compression set. Sample inserts selected in accordance with 4.2.4 shall be tested in accordance with method B of ASTM D 395 to determine compliance with 3.1.1. 22 hours, Samples shall be conditioned at 158F for 4.5 Failure to meet the tests specified in 4.4.1.1
