1、DOD-C-2b7B 80 9 9777906 0096712 3 9. 11 Februzrv 1980 SUPERSEDING 25 October 1972 (See 6.4) MIL-C-2687A MILITARY SPECIFICATION COMPOUND, BATTERY-SEALING (METRIC) This specification is approved for use by all Departments 1. SCOPE f 1.1 ScoDe. This specification covers sealing lead-acid storage batter
2、ies. and Agencies of the Department of Defense. compounds 1.2 Classification. The compound sha but one type as hereinafter specified. 2. APPLICABLE DOCUMENTS 1 be furn for shec. in 2.1 Issues of documents. The following documents, of the issue in effect on date of invitation for bids or request for
3、proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS FEDERAL PPP-C-96 - Cans, Metal, 28 Gage and Lighter. PPP-D-711 - Drum: Metal, Shipping, Steel, PPP-P-704 - Pails, Metal: (Shipping, Steel, Lightweight (55 Gallon). 1 through 12 Gallon). Beneficial comments (re
4、commendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Nava Sea Systems Command, SEA 3112, Department of the Navy, Washington, DC 20362 by using the self-addressed Standard- ization Document Improvement Proposal (
5、DD Form 1426) appearing at the end of this document or by letter. FSC 803C -_1 THIS DOCUMENT CONTAINS 13 PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-C-2687B 0 777970b 0076713 5 9 / i STANDARDS MILITARY . MIL-STD- MIL-STD- MIL-STD- DOD-
6、C-2687B 05 - Sampling Procedures and Tables for Inspection by Attributes. 29 - Marking for Shipment and Storage. 47 - Palletized and Containerized Unit Loads 40“ x 48“ Pallets, Skids, Runners, or Pallet-Type Base. (Copies of specifications, standards, drawings, and publications required by contracto
7、rs in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) ii 2.2 Other Dublication. The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue
8、in effect on date of iavitation for bids or request for proposal shall apply. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 5 -.Test for Penetration of Bituminous Materials. D 36 - Test for Softening Point of Bitumen (Ring and D 92 - Test for Flash and Fire Points by Cleveland D .113 - Test fo
9、r Ductility of Bituminous Materials. Ball Apparatus). Open Cup. (Application for copies should be addressed to the American . Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103,) UNIFORM CLASSIFICATION COMMITTEE, AGENT Uniform Freight Classification Ratings,-Rules, and ,Regu
10、lations,. (Application for copies should be addressed to the Uniform Classification Committee Agent, Tariff Publication Officer, Room 1106, 222 South Riverside Plaza, Chicago, IL 60606.) NATIONAL MOTOR FREIGHT TRAFFIC ASSOCIATION, IMC. AGENT National Motor Freight Classification. (Application for co
11、pies should be addressed to the National Motor Freight Traffic Association, Inc., ATA Traffic Dept., 1616. iiP1t Street, N.W., Washington, DC 20036.) (Technical society and technical association specifications and standards are generally available for reference from libraries. They are also distribu
12、ted among technical groups : and using Federal agencies.) . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-C-2687B I b Condition of test Minimum penetration Temperature Mass Time Degrees C Grams .Seconds Tenths of a millimeter 25 1 O0 5 45 O 200
13、 60 30 3. REQUIREMENTS . 3.1 General. The compound shall not shrink, crack, or separate from a holding surface such as hard rubber or glass, at any temperature between -18O and 660 Celsius (Cl. Eetween these two temperatures it shall adhere sufficiently to the holding surface to maintain an acidtigh
14、t joint. 3.2 Softening Doint. The softening point of the compound shall be between 77OC and 100C when determined by the method prescribed in 4.4.1. 3.3 Flash Doint. The flash point of the compound shall be not lower than 292OC when determined by the method prescribed in 4.4.2. 3.4 Penetration. When
15、the compound is tested as specified in 4.4.3, the penetration values shall be not less than those shown in table I. 3.5 Hot test. When subjected to the hot test specified in 4.4.4, the compound shall not flow below the bottom edges of the slot at the expiration of 24 hours. 3.6 Cold test. When subje
16、cted to the cold test specified in 4.4.5, the average breaking point of the three samples of the compound, in angular degrees, shall be not less than 30 degrees. 3.7 Adhesion. When subjected to the test specified in 4.4.6, the adhesion of the compound, expressed in newtons (pounds) pull to break, sh
17、all be not less than 250 (55). 3.8 Ductility. When subjected to the test specified in 4.4.7, the ductility of the compound,. expressed in centimeters elongation, shall be not less than the values shown in table III. Provided by IHSNot for ResaleNo reproduction or networking permitted without license
18、 from IHS-,-,-b -. DOD-C-2687B 0 9 9779906 0076735 7 b DOD-C-2687E TABLE 1. Ductilitv. Condition of test Minimum elongation I- Temperature i c I I Degrees C 25 O Centimeters 3.0 2.0 3.9 Stain. When the compound is subjected to the test specified in 4.4.8, there shall be no appearance of stain beyond
19、 the outside diameter of the ring. 3.10 Solubilitv in sulfuric acid. When tested as specified in 4.4.9, the residue shall not exceed 0.01 grams (o;) and there shall be no discoloration of the solution. 4. QUALITY ASSURANCE PROVISIONS 4.1 ResDonsibilitv for insDection. Unless otherwise specified in t
20、he contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the contractor may use his own or any other facilities suitable for the performance of the inspection requireme
21、nts specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. * 4.1.1 Test reDorts. The con
22、tractor shall prepare a test report, including all tests in table IV, in accordance with the data ordering documents included in the contract or order (see 6.2.2 and 6.3). 4.2 SamDlinq for aualitv conformance insDection. 4.2.1 W. For purposes of sampling, a lot shall consist of all compound from one
23、 production batch. 4.2.2 SamDlinq for aualitv conformance tests. A sample shall be taken from each lot of compound at the time the compound is poured into shipping containers. In the event the sample is to represent a lot of compound which has already been poured into shipping containers, the sample
24、 shall be taken from five randomly selected containers. If there are less than five co-tainers, each container shall be sampled. / I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I DOD-C-2687B 80 9999906 0096736 O m Softening point Flash point DOD-
25、C-2687B t 4.2.3 SamDling for aualitv conformance examination. A random sample of filled containers shall be selected in accordance with MIL-STD-105 at inspection level S-1 and acceptable quality level (AQL) = 2.5 percent defective to verify compliance with all requirements regarding fill, closure, m
26、arking, and other requirements not requiring tests. 4.3 Lot insDection. 4.3.1 Tests. The sample selected in accordance with 4.2.2 shall be subjected to the tests specified in 4.4. If the sample tested is found not to be in conformance with this specification, it shall be cause for rejection of the l
27、ot represented by the sample. 4.3.2 Examination. Each sample filled container selected in accordance with 4.2.3 shall be examined to verify conformance with the requirements of this specification. Any container in the sample having one or more defects shall be rejected, and if the number of defectiv
28、e containers in any sample exceeds the acceptance number for the appropriate sampling plan, it shall be cause for rejection of the lot represented by the sample. 4.4 Tests. The tests listed in table III shall be performed on each sample selected in accordance with 4.2.2. TABLE III. Tests. (. I- I I
29、1 Test Requirement Applicable paragraph paragraph I I- l I 3.2 3.3 . 3.4 3.5 3.6 3.7 3.8 3.9 3.10 4.4.1 4.4.2 4.4.3 4.4.4 4.4.5 4.4.6 4.4.7 4.4.8 4.4.9 4.4.10 4.4.10 8 4.4.1 Softeninn DO int. The softening point of the compound shall be determined by the ring and ball method in accordance with ASTM
30、D 36. 4.4.2 Flash Doint. The flash point of the compound shall be determined by the Cleveland Open Cup method in accordance (- with ASTM D 92. / y- - - _. - _ . . , : Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-C-ZhB7B BO W 999990b 009h737 2
31、W I DOD-C-2687B 4.4.3 Penetration. The penetration values of the compound shall be determined in accordance with ASTM D 5. Y 4.4.4 Hot test. The compound shall be melted by heating to the pouring temperature specified by the manufacturer on the container and then poured to a depth of 1.3 centimeter
32、(cm) (0.50 inch) into a cylindrical brass cup having an inside diameter of 5 cm (2 inches) and a base of 0.30 cm (0.125 inch) thick. The base shall have a slot 2.50 0.01 cm by 0.08 5 0.01 cm (1.000 f 0.005 by 0.0312 f 0,0005 inch) located near its center and shall be supported so there is at least 0
33、.50 (0.25 inch) free space below the slot. After the compound has been cooled for at least 16 hours, it shall be placed in an oven and held at a temperature of 66OC for 24 hours. 4.4.5 Cold test. Three specimens of the compound shall be poured at the pouring temperature specified by the manufacturer
34、 on the containers into a form 0.30 cm by 2.5 cm by 15 cm (0.125 by 1 inch by 6 inches). After cooling to room temperature, the specimen shall be si;bjected to a temperature of minus 18OC for 24 hours. A bending test shall then be made by holding one-half of the specimen in place and slowly applying
35、 a load to the free end until the specimen fractures. The angle of bend at the time of fracture shall be noted and an average of the three results shall be obtained. To prevent the specimens from becoming warm, they shall be tested without removing from the minus 18OC ambient temperature and gloves
36、shall be used in handling. The specimens shall be clamped the full length with flat clamps except that 1.0 cm (i375 inch) of the compound shall be free 8.6 cm (3.375 inches) from the fixed end to allow for bending. The specimen shall be bent at approximately 6 angular degrees per second. The cold be
37、nd apparatus is illustrated by figures 1 and 2. 4.4.6 Adhesion test Two hard rubber disks, each with a surface area of 12.9 cmi (2 square inches) and mounted on steel shafts, shall be arranged facing each other 0.24 cm (0.09375 inch) apart, A phenolic cylinder with a 1.3 cm (0.50 inch) section remov
38、ed, shall be used as a spacer and retainer for the compound, which shall be heated and poured between the disks. The disks and spacers shall be pre-heated for 1 hour at 77OC before pouring the compound, and the inner surface of the phenolic cylinder shall be coated with a thin film of grease before
39、pouring. The edges of the spacer shall be forced apart / grease. The compound shall be poured at the pouring temperature i specified by the manufacturer on the container. After pouring, i the asembly shall be allowed to cool to 25OC and shall then be pulled apart at the rate of 1.3 cm (0.50 inch) pe
40、r minute. The testing apparatus is illustrated by figure 3. . to allow for the entrance of the disks with no acquisition of ! ! 4.4.7 Ductilitv. The ductility of the compound shall be determined in accordance with ASTM D 113. - - 6 ._ - - 7- _. - - _- _I_- /-=- -., . -I- Provided by IHSNot for Resal
41、eNo reproduction or networking permitted without license from IHS-,-,-, DOD-C-2687B 80 W 7737906 00767L8 4 W DOD-C-2687B 4.4.8 Stain test. The compound shall be poured at the pouring temperature specified by the manufacturer on the container into a standard softening point ring (see 4.4.1). After al
42、lowing the assembly to cool to room temperature, th compound shall be trimmed flush with a heated knife, and the ring shall be placed on a pie-ce of filter paper similar to Whatman No. 40 filter paper for 24 hours at 6OOC. 4.4.9 Solubilitv sulfuric acid. A cube of the compound, approximately 2.5 cm
43、(1 inch) on the side, shall be completely immersed in 200 milliliter (mL) of water-white sulfuric acid electrolyte of 1.315 specific gravity, at a temperature of 2loC to 27OC for a period of 24 hours. After removing the compound completely, the acid shall be taken to dryness and the mass of residue
44、determined. 4.4.10 Chemical analvsis and sDecific pr avitv. The percentage of ash, chloroform insoluble matter, and fatty matter as well as the specific gravity of the compound shall be determined for information and for marking containers (see 5.4). 4.4.11 If a sample fails to pass any of the above
45、 tests, the lot shal be rejected. 4.5 InsDection of preDaratioq for deliverv. Sample packages and packs and the inspection of the.packaging, packing, and marking for shipment and storage shall be in accordance with the requirements of section 5 and the documents specified therein. 5. PACKAGING (The
46、preparation for delivery requirements specified herein apply only for direct Government acquisitions.) 5.1 Packaning. Packaging shall be level A or C, as specified (see 6.2.1). * 5.1.1 Level A. Battery sealing compound shall be furnished in 8, 25, or 100 pound (approximate 4, 12, or 50 kilogram, res
47、pectively) quantities in cans, pails, or drums as specified (see 6.2). * 5.1.1.1 Cans. Eight pound (4 kilogram) quantities shall be furnished in 1-gallon (approximate 4 liter) type V, round, class 2 cans of PPP-C-96. Plan B exterior coating shall be required. o 5.1.1.2 pails. Twenty-five pound (12 k
48、ilogram) quantities shall be furnished in pails conforming to type II, class 3 of PPP-P-704. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-C-2687B 0 = 797770b 0076739 6 DOD-C-2667B * 5.1.1.3 Drums. One-hundred pound (50 kilogram) quantities sha
49、ll be furnished in drums conforming to type III or IV of PPP-D-711 except that the drum dimensions and capacity donot apply k 5.1.2 Level c. Battery sealing compound in the quantity specified (see 6.2.11, shall be packaged to afford protection against deterioration and physical damage or loss during shipment from the supply source to the first receiving activity for immediate use. The contractors retail or wholesale
