1、INCH-POUNDA-A-5929321 July 1998SUPERSEDINGMIL-S-11031B5 JUNE 1963COMMERCIAL ITEM DESCRIPTIONSEALING COMPOUND, ADHESIVE: CURING (POLYSULFIDE BASE)The General Services Administration has authorized theuse of this commercial item description, for allfederal agencies.1. SCOPE. This CID covers the genera
2、l requirements for one type of inert,curing-type, adhesive sealing compound suitable for use by injection inbonding metal to metal or glass to metal, in optical instruments or firecontrol instruments.2. SALIENT CHARACTERISTICS.2.1 Materials . The sealing compound shall be a two-part material consist
3、ing ofa base ( polysulfide) compound and an accelerator. The compound shall consistof the properties as specified in Table I when tested as indicated therein.The quantity and unit size of the sealing compound shall be as specified inthe contract or order (see 6.2 and 6.3).2.2 Color . The base compou
4、nd shall be black in color.2.3 Volatile content . The volatile content of the freshly prepared sealingcompound shall not exceed 3 percent by weight.2.4 Water solubility . The solubility in distilled water of the cured sealingcompound shall not exceed 6 percent by weight.2.5 Low temperature flexibili
5、ty . The cured sealing compound shall show noevidence of cracking or lack of adhesion when subjected to flexing at -40 F(-40 C).AMSC N/A FSC 8030DISTRIBUTION STATEMENT A . Approved for public release; distribution isunlimited.Beneficial comments (recommendations, additions, deletions) and any pertin
6、entdata which may be of use in improving this document should be addressed to:Commander, US Army TACOM-ARDEC, Attn.: AMSTA-AR-EDE-S, Bldg 12, PicatinnyArsenal, NJ 07806-5000 by using the Standardization Document ImprovementProposal (DD Form 1426) appearing at the end of this document or by letter.Pr
7、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5929322.6 Oil resistance . The cured sealing compound shall show no evidence ofblistering, softening, or loss of adhesion when in contact with petroleum oiland synthetic fluid.2.7 Adhesion . The cured
8、 sealing compound shall exhibit a tensile bond strengthof not less than 200 pounds per square inch.2.8 Effect of volatile components . There shall be no evidence of chemicalattack, such as crazing, pitting, or etching on the surface of methylmethacrylate when exposed to volatile (and non-volatile) c
9、omponents of freshlycured sealing compound.2.9 Water vapor permeability . The cured sealing compound shall have a watervapor transmission rate of not greater than 0.025 grams per hour per squareinch.2.10 Working life . The mixed sealing compound shall have a cone penetrationvalue of not less than 20
10、0 after 3 hours at 75 2 F and the change in conepenetration within the 3 hour period shall not be greater than 75.2.11 Hardness . The cured sealing compound shall have a Durometer A hardness of40 5.TABLE I . Physical propertiesProperty Requirement Test Method1. Volatile Content 2.3 4.3.12. Water Sol
11、ubility 2.4 4.3.23. Low Temperature Flexibility 2.5 4.3.34. Oil Resistance 2.6 4.3.45. Adhesion 2.7 4.3.56. Effect of Volatile Components 2.8 4.3.67. Water Vapor Permeability 2.9 4.3.78. Working Life 2.10 4.3.89. Hardness 2.11 4.3.93. REGULATORY REQUIREMENTS. The offeror/contractor is encouraged to
12、userecovered materials to the maximum extent practicable, in accordance withparagraph 23.403 of the Federal Acquisition Regulation (FAR).Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5929334. QUALITY ASSURANCE PROVISIONS.4.1 Product Conformance
13、 . The products provided shall meet the salientcharacteristics of this commercial item description, conform to the producersown drawings, specifications, standards, and quality assurance practices, andbe the same product offered for sale in the commercial market. The governmentreserves the right to
14、require proof of such conformance.4.2 Market Acceptability . The sealing compound must meet the marketacceptability criteria when specified in the contract or order (see 6.2).4.3 Tests4.3.1 Volatile content . Not less than 10 grams of the base compound andaccelerator shall be prepared at one time. T
15、he ratio of the base compound toaccelerator shall be as specified by the manufacturer. The two componentsshall be thoroughly mixed taking care that all traces of the acceleratordisappear and that no base compound is left around the edges or in the cornersof the mixing vessel. Examination shall be ma
16、de for homogeneity. A sample(about 2 grams) of the prepared compound shall be spread uniformly,approximately .0625 inch thick, on one side of a weighed 2 by 4 by 0.040 inchaluminum panel. Immediately after preparing the panel, it shall be accuratelyweighed and placed in a circulating air oven at 200
17、 2 F (93.3 1.1 C) fora period of 2 hours. The panel shall then be removed, and allowed to cool toroom temperature, then carefully reweighed. The loss in weight divided by theinitial weight of the sample, multiplied by 100, shall constitute the percentof volatile content. The test shall be performed
18、in duplicate. Failure ofeither sample shall be cause for rejection.4.3.2 Water solubility . The panels with samples, which were used indetermining the volatile content, shall be immersed in distilled water andheated at 160 2 F (71.1 1.1 C) for 4 hours. They shall then be removedand dried in air at 2
19、00 2 F (93.3 1.1 C) for 2 hours. The loss in weightdivided by the weight of the sample after the determination of the volatilecontent and multiplied by 100 shall constitute the percent of water-solublematerial.4.3.3 Low temperature flexibility . A 1 by 4 by 0.040 inch aluminum panelshall be coated o
20、n one side with the freshly prepared compound (see 4.3.1) toa thickness of .0625 inch. The panel shall be allowed to stand for 72 hoursat 75 to 85 F or placed in a circulating air oven for 2 hours at 200 2 F(93.3 1.1 C). The panel shall then be subjected to a temperature of -40 2 F (-40 1.1 C) for 4
21、 hours. At that temperature, the panel shall be bentrapidly over a 1 inch diameter mandrel through an angle of 90 and with theuncoated surface resting on the mandrel. The mandrel shall be at the sametemperature as that of the panel. After bending the panel, the sample shallbe inspected for evidence
22、of cracking and lack of adhesion. Test shall beperformed in duplicate. Failure of either sample shall be cause forrejection.4.3.4 Oil resistance . Approximately 1 gram of the freshly prepared compound(see 4.3.1) shall be spread uniformly on one side of a 1 by 4 by 0.040 inchaluminum panel. The sampl
23、e shall be allowed to cure for 72 hours at 75 to 85F or for 2 hours at 200 2 F (93.3 1.1 C). The sample shall then bepartially immersed for 4 days in noncorrosive lubricating oil which shall berefined petroleum hydrocarbons free from additives except pour-pointdepressant. This test shall be conducte
24、d at room temperature. The panelshall be removed and the sample shall be examined for evidence of blistering,Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-592934softening, and lack of adhesion. Test shall be performed in duplicate.Failure of ei
25、ther sample shall be cause for rejection.4.3.5 Adhesion . The freshly prepared compound (see 4.3.1) shall be applied toboth surfaces of a steel tensile specimen as described in ASTM D897. Thespecimen shall be compressed under a load of 200 pounds for about 20seconds to ensure a minimum gap between t
26、he adherents of the specimen. Thetest specimen shall then be conditioned for 72 hours at 75 to 85 F. Bondstrength of the assembly shall be measured in a tensile testing machine whoseidle jaw separation speed is 1 inch per minute. The test shall be conductedat room temperature. Test shall be performe
27、d in duplicate. Failure of eitherspecimen shall be cause for rejection.4.3.6 Effect of volatile components . A 5 to 6 gram sample of freshly preparedcompound (see 4.3.1) shall be placed on a 2 inch diameter watch glass and thenplaced in an enclosed vessel which contains a polished methyl methacrylat
28、ewindow. The test fixture shall be placed in an oven at 160 2 F (71.1 1.1 C) for 3 hours, then removed and allowed to cool to a temperature ofapproximately 100 F (38 C). The outer surface of the methyl methacrylatewindow shall be cooled by placing a piece of dry ice having a flat side ofabout square
29、 inch onto the window of the fixture and allowed to remain incontact with the window until condensation is observed on the inner surface ofthe window or for a period not greater than 20 minutes. The fixture shallthen be allowed to remain at room temperature for a period of 2 hours. Thewindow of the
30、fixture shall be removed and its inner surface washed with tapwater and wiped with a soft cloth. The surface shall then be examined withthe aid of a 10 power magnifier (approximately) in the area where condensationhad formed for visual evidence of crazing, pitting, or etching. Testing shallbe perfor
31、med in duplicate. Failure of either sample shall be cause forrejection.4.3.7 Water vapor permeability . A sufficient amount of freshly preparedsealing compound (see 4.3.1) shall be pressed between two polyethylene sheetsto form a film about 0.075 inch thick and 3 inches in diameter. The sandwichthus
32、 formed shall be placed on dry ice for a period of about one hour. Atthis low temperature, one of the polyethylene sheets shall be peeled off andthe sealing compound then allowed to return to room temperature. A suitablesize screen which will retain the sealing compound shall be placed on thesealing
33、 compound. It is recommended that this screen be brass or aluminum ofapproximately 2.5 inches in diameter, having a mesh of approximately 33 by 40and a wire thickness of 0.010 inch. The polyethylene sheet which was removedafter freezing shall be placed on the screen and the assembly shall becompress
34、ed until the overall thickness of the sealing compound and screen willbe 0.064 0.002 inch. The assembly shall then be placed in an oven at 200 2 F (93.3 1.1 C) for 2 hours to cure and solidify the sealing compound.After the curing treatment, the polyethylene sheets shall be removed and thescreen-sup
35、ported film shall be trimmed and placed in a position as shown onfigure 1. Approximately 5 milliliters of distilled water shall be placed in aPetri dish. The two metal plates holding the film of sealing compound and thePetri dish shall be screwed together tightly to ensure a good seal between theedg
36、e of the Petri dish and the sealing compound. The two assemblies shall beprepared as described above. A third assembly shall be prepared in the samemanner except that no water shall be placed in the Petri dish. The threeassemblies shall be carefully weighed and placed in an oven at 160 2 F(71.1 1.1
37、C) for 48 hours. The loss in weight of the dry assembly shall besubtracted from the weight of each of the other two assemblies and the watervapor transmission rate shall be calculated in units of grams of water perhour per square inch of open area. The open area is the area of the 1.875Provided by I
38、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-592935inch hole in the metal plate minus the area occupied by the wires of thescreen within the hole. Failure of either sample shall be cause forrejection.4.3.8 Working life . Prepare a sample of 75 to 80 grams
39、of freshly preparedsealing compound (see 4.3.1). The sample shall be placed immediately into areceptacle of approximately 2 inches in diameter and 1.25 inch deep. The timeshall be recorded and cone penetration test shall be made immediatelythereafter. The test shall be made at a temperature of 75 2
40、F and inaccordance with ASTM D217-94. After 3 hours, the same penetration shall berepeated. The test shall be performed in duplicate. Failure of either sampleshall be cause for rejection.4.3.9 Hardness . The test procedure shall be as described in method 3021 ofFed. Test Method Std. No. 601.5. PACKA
41、GING. Preservation, packing, and marking shall be as specified in thecontract or order.6. NOTES.6.1 Source of documents .6.1.1 The Code of Federal Regulations (CFR) is available by mail order fromthe Superintendent of Documents, ATTN: New Order, PO Box 371954, Pittsburgh,PA 15250-7954.6.1.2 Federal
42、test method standards are available from the StandardizationDocument Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.6.1.3 ASTM standards and test methods are available from the American Societyfor Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-295
43、9.6.2 Ordering data . Procurement documents should specify the following:a. Title, number, date of this CID.b. Quantity (see 2.1).c. Unit sizes (see 2.1 and 6.3).d. Need for market acceptability criteria (see 4.2.e. Packaging and marking requirements (see 5).6.3 Unit sizes . As of the date of this d
44、ocument, the quantities and unitsizes identified herein were commercially available:24 ea. per case 2 oz. And 6 oz. Cartridges16 ea. per case Pint Kit16 ea. per case Quart Kit4 ea. per case Gallon KitThe sealing compound is also available in 5-gallon and 50 gallon DrumKits.6.4 Material safety data s
45、heets . Products meeting the requirements of thisCID may be subject to the requirements of 29 CFR 1910.1200 and FED-STD-313 forMaterial Safety Data Sheets.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-592936MILITARY INTERESTS: CIVIL AGENCY CO O
46、RDINATING ACTIVITY:GSA-FSSCustodiansArmy-AR Preparing Activity:Air Force-11 Army-ARNavy - MCReview Activities (Project 8030-0771)Army-AT, AVProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-592937FIGURE 1. Assembly for water vapor permeability test
47、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STANDARDIZATION DOCUMENT IMPROVEMENT PROPOSALINSTRUCTIONS1. The preparing activity must complete blocks 1, 2, 3, and 8. In block 1, both the document number and revision letter should begiven.2. The sub
48、mitter of this form must complete blocks 4, 5, 6, and 7.3. The preparing activity must provide a reply within 30 days from receipt of the form.NOTE: This form may not be used to request copies of documents, nor to request waivers, or clarification of requirements on currentcontracts. Comments submit
49、ted on this form do not constitute or imply authorization to waive any portion of the referenceddocument(s) or to amend contractual requirements.I RECOMMEND A CHANGE: 1. DOCUMENT NUMBERA-A-59293 2. DOCUMENT DATE (YYMMDD)9807213. DOCUMENT TITLE SEALING COMPOUND, ADHESIVE: CURING (POLYSULFIDE BASE)4. NATURE OF CHANGE (Identi
