1、MIL-S-5334 0 W 7777706 0333777 T W MIL-S-85334 (AS) 21 May 1980 MILITARY SPECIFICATION SEALING COMPOUND, NONCURING, LOW CONSISTENCY, SILICONE, GROOVE INJECTION, FOR INTEGRAL FUEL TANKS This spec2fication is approved for use by the Naval Air Systems Command, Department of the Navy and is available fo
2、r use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification establishes the requirements for one type of inert, permanently mastic silicone type sealing compound modified with a flow control additive, or sealing or resealing integral fuel tanks on milit
3、ary aircraft. 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The following documents of the issue in effect on date of invitation or bids or request for proposal from a part of this specification to the extent specified herein. SPECIFICATIONS FEDERAL L-P-378 -Plastic Sheet and Strip, Thin gauge, P
4、olyolefin QQ-A-250/4 -Aluminum Alloy 2024, Plate and Sheet QQ-A-250/ 12 -Aluminum Alloy 7075, Plate and Sheet TT-E- 75 1 -Ethyl Acetate, Technical Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to:
5、 Engineering Specifications and Standards Department (Code 9321), Naval Air Engineering Center, Lakehurst, NJ 08733, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. FSC 8030 Provided by IHSNot for ResaleNo r
6、eproduction or networking permitted without license from IHS-,-,-FEDERAL (Continued) TT-1-735 TT-M-261 TT-N-9 7 TT-S-735 TT-T-548 PPP-B-566 PPP-B-636 PPP- C- 9 6 MILITARY MIL-6-5541 MIL-T-5624 MIL-S-6758 MIL-P-7105 MIL-S-7720 MIL-5-7742 / MIL-P-19468 MIL- C- 27 7 25 MIL-P-387 14 MIL-C-81706 2 ,y*; M
7、IL- C - 8 7 9 6 2 -Isopropyl Alcohol 1 -Methyl-Ethyl-Ketone, Technical -Naphtha, Aromatic -Standard Test Fluids, Hydrocarbon -Toluene; Technical -Box, Folding, Paperboard -Box, Shipping, Fiberboard -Cans, Metal, 28 Gauge and Lighter -Chemical Conversion Coatings on Aluminum and Aluminum Alloys -Turb
8、ine Fuel, Aviation, Grades JP-4 and JP-5 -Steel, Chrome - Molybdenum (4130) Bars and Reforging Stock (Aircraft Quality) -Pipe Threads, Taper, Aeronautical National Form, Symbol ANPT, General Requirements for -Steel, Corrosion Resistant (18-8) Bars, Wire and Forging Stock (Aircraft Quality) -Screw Th
9、reads, Standard, Optimum Selected Series, General Specification for -Plastic Rod Polytetrafluoroethylene, Molded and Extruded “Coating, Corrosion Preventive, For Aircraft Integral Fuel Tanks -Packaging and Packing of Two-Component Materials in Semkits -Chemical Conversion Materials for Coating . Alu
10、minum and Aluminum Alloys - -Cloths, Cleaning, for Aircraft Fuel Tanks rl Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STANDARDS FEDERAL FED-STD-791 -Lubricants, Liquid Fuels and Related Products, Methods of Testing MILITARY MIL-STD-105 -Sampling
11、Procedures and Tables for Inspection by Attributes MIL-STD-129 -Marking for Shipment and Storage (Copies of specifications, standards, drawings and publications required by contractors in connection with specific procurement func- tions should be obtained from the procuring activity or as directed b
12、y the contracting officer.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. AMERICAN SOCIETY FOR TESTING AND MATERIALS
13、 (ASTM) ASTM A108-73 -Steel Bars, Carbon, Cold-Rolled Strip ASTM D471-77 -Rubber, Property - Effect of Liquids (Applications for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103 .) CONSOLIDATED CLASSIFICATION COMMITTEE Uniform Fre
14、ight Classification Rulesd (Application for copies should be addressed to the Consolidated Classification Committee, 202 Chicago Union Station, Chicago, IL 60606.) (Technical society and technical association specifications and standards are generally available for reference from libraries. They are
15、 also distributed among technical groups and using Federal agencies.) 3. REQUIREMENTS 3.1 Qualification. The integral. fuel tank sealing compounds furnished under this specification shall be products which are qualified for listing on the applicable qualified products list at the time set or opening
16、 of bids (see 4.3 and 6.3). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.5 MIL-S-85334 80 M 7779706 OLL1783 L M MIL-S-85334 (AS) 3.5.1 ompressive
17、 1 in 4.6.2.1. 3.5.2 Performance properties. Extrusion force. The compound shall extrude under a d of 150 to 300 pounds (65 to 135 Kg) when tested as specified Low temperature flexibility. When tested as speci- fied in 4.6.2.2, the compound shall not crack, harden or exhibit loss of adhesion. 3.5.3
18、there shal specified 3.5.4 prepared a below: Seal efficiency. When tested as specified in 4.6.2.3, be no leakage through the faying surface in excess of that in 4.6.2.3.4.1. The compound shall remain reinjectable. Injection and reinjection properties. Specimens d tested in 4.6.2.4 shall comply with
19、the requirements listed (To) Original injection time, seconds, max. - 35 - as determined - 50 to 200% of T1 (T1) Original reinjection time, seconds, max. (T ) Reinjection time after fuel/heat exposures Volume of sealant, port +/I, after - 0.5 cc minimum reinjection . 3.5.5 Large gap retention. Speci
20、mens prepared and tested as specified in 4.6.2.5 shall exhibit no sealant flow beyond the faying edge of the fixture. 3.5.6 Resistance to pressure rupture. The sealing compound when tested as specified in 4.6.2.6 shall exhibit minimum average pressure rupture as follows: Condition Control After fuel
21、 At elevated temperature 7lo1tl0C ( 1601t20F) Requirement psi .(kPa) 5.9 1.7 1.7 (40.6) 12 inches (305 mm) of Hg (11.7) 3.5 inches (90 mm) of Hg (11.7) 3.5 inches (90 mm) of Hg 3.5.7 Cold flow. The c-ange ,n height of the sealant column shall not exceed 30 percent when tested as specified in 4.6.2.7
22、. 3.6 Workmanship. The sealing compound furnished under this specification shall be formulated from highest quality components described herein to meet all the requirments of this specification. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I I 4
23、. QUALITY ASSURANCE PROVISIONS E 4.1 Responsiblity for inspection. Unless otherwise specified in the contract, the contractor is responsible for the per- formance of all inspection requirements as specified herein. Except as otherwise specified in the contract, the contractor may use his own or any
24、other facilities suitable for the performance of inspection require- ments 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 ser
25、vices conform to prescribed requirements. 4.1.1 Source inspection. Materials procured by the govern- ment under this mecification must be source inspected. so that the material meets the- quality conformance inspection 74.4) when it leaves the manufacturers plant. In addition, samples for quality co
26、nformance shall be packaged as much as practical in the same containers used for deliverv of the sealina comiiound. I 4.2 Classification of inspections. The inspection requirements specified herein shall be classified as follows: I I 1. Qualification inspection (see 4.3) 2. I Quality conformance ins
27、pection (see 4.4) 4.3 Qualification inspection. Qualification shall consist of al1 the tests specified in Table II. TABLE II. Qualification tests, CI Test Specific gravity Nonvolatile content Fuel resistance Adhesion Corrosion Extrusion force Low temperature flexibility Seal efficiency Injection and
28、 reinjection Large gap retention Pressure rupture Cold flow Requirement Paragraph Table I Table I Table I Table I Table I 3.5.1 3.5.2 3.5.3 3.5.4 3.5.5 3.5.6 3.5.7 Test Paragraph 4.6.1.1 4.6.1.2 4.6.1.3 4.6.1.4 4.6.1.5 4.6.2.1 4.6.2.2 4.6.2.3 4.6.2.4 4.6.2.5 4.6.2.6 4.6.2.7 I 6 c I - Provided by IHS
29、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.3.1 Qualification sampling. Qualification sample shall consist of 8 - six fluid ounce (180 mi) cartridges containing 8 ounces (225 gm) minimum, by weight, of sealing compound packaged as specified by the qualifying
30、laboratory. The containers shall be in accordance with Section 5 of this specification. The samples shall be orwarded to the Commander, Naval Air Development Center, Warminster, PA 18974, Attention: ACSTD (Code 60621) (Qualifying Laboratory) . The samples shall be durably and plainly marked with the
31、 following information: SAMPLE FOR QUALIFICATION TESTING SEALING COMPOUND, NONCURING, LOW CONSISmNCY SILICONE, GROOVE INJECTION, FOR INTEGRAL FUEL TANKS Name and address of manufacturer Plant address and date sample produced Manufacturers part number or designation Submitted by (name) for qualificat
32、ion in accordance with the requirements of MIL-S-85334 under authorization (reference authorizing letter) (see 6.3) 4.3.2 Manufacturers data. 4.3.2.1 Test reports. Two copies of the manufacturers certified test report, showing the material submitted conforms to all the requirements of this specifica
33、tion, shall be forwarded with the qualification sample. The test report shall reference the specific test methods of this specification. 4.3.2.2 Instructions for use. Two copies of the manufac- turers instructions for the use of the sealing compound shall be sub- mitted with the qualification sample
34、s. 4.3.3 Retention of qualification. In order to retain qualification of products approved for listing on the Qualified Products List (QPL), the manufacturer shall verify by certification to the qualify- ing activity that his product complies with the requirements of this specification. Periodic ver
35、ification by certification shall be at two year intervals from the date of original qualification. The qualifying activity may require verification by certification at intervals of less than two years from the date of initial qualification. 4.4 Quality conformance inspection. 4.4.1 Lot formation. Un
36、less otherwise specified, a lot shall consist of all the sealing compound, formulated from the same components under essentially the same conditins and submitted for inspection at one time. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-8533
37、4 (AS) 4.4.2 Sampling. 4.4.2.1 Physical and performance properties. Physical and performance property samples shall be randomly selected from each lot of sealing compound offered for inspection. Sufficient material shall be selected to complete the testing specified in 4.4.3.1. 4.4.2.2 Packaging. 4.
38、4.2.2.1 Unit container. A random sample of unit containers shall be selected from each lot in accordance with Inspection Level I of PIIL-STD-IO5 and inspected as specified in 4.4.3.2. The sample unit shall be one filled container. The lot size shall be the number of unit containers. 4.4.2.2.2 Shippi
39、ng containers. Shipping containers, just Drim to closure. shall be randomlv selected from each lot in accordance With Inspection Level I of NIL-SiD-105 for inspection as specified in 4.4.3.2. The lot size shall be the total number of shipping containers. The sample unit shall be one shipping contain
40、er. 4.4.3 4.4.3.1 Physical and performance test properties. The sample selected as specifed in 4.4.2.1 shall be tested to the requre- ments of Table III. Nonconformance of the sample to any of the speci- fied requirements shall be cause to reject the lot represented by the sample. Quality conformanc
41、e tests and examinations. TABLE III. Quality conformance physical and performance properties. Requirement Nonvolatile Content Puel resistance i-/ Adhesion Extrusion force Pressure rupture Cold flow Requirement Paragraph Table I Table I Table I 3.5.1 3.5.6 3.5.7 Test Paragraph 4.6.1.2 4.6.1.3 4.6.1.4
42、 4.6.2.1 4.6.2.6 4.6.2.7 - 11 4.4.3.2 Packaging examination. Samples selected in accor- dance with 4.4.2.2.1 and 4.4.2.2.2 shall be visually examined to the applicable requirements in Table IV and ali other requirements to deter- mine conformance to Section 5 of this specification. The Acceptable Qu
43、ality Level (AQL) for this inspection shall be 2.5 percent. In addi- tion, shipping containers fully prepared for delivery shall be inspected for closure defects. Using jet reference fluid only. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S
44、-8533q 80 777770b 0111787 7 W MIL-S-85334 (AS) TABLE IV. Packaging examination. Examination Fill Packaging Packing Count Markings Defect Not volume or weight specified in contract (Individual containers may be replaced by properly filled containers.) Wrong size cans or cartridges Material or constru
45、ction not as specified Components damaged, missing, or contents Unit package closure incomplete or damaged Not level required by contract or purchase order leaking Not level required by contract or purchase order Any nonconforming component, incomplete closures Bulged or damaged shipping containers
46、Less than specified or indicated quantity per shipping containers Unit package and packing - Omitted, illegible, incorrect, incomplete or not in accordance with contract requirements 4.5 Test conditions. 4.5.1 Standard conditions. Standard conditions shall be 250flC (77Ok2OF) and a relative humidity
47、 of 50+5 percent. Unless otherwise specified, all tests shall be conducted at standard conditions. 4.5.2 4.5.2.1 Surface treatment of test panels. Unless otherwise specified, all test panel areas shall have a chemical film conforming to MIL-C-5541 (The film produced from materials in accordance with
48、 MIL-C- 81706). Where referenced in the test method, an 0.8 to 1.2 mil thickness of coating conforming to MIL-C-27725, Type II, Class A, shall be applied and cured for 24 hours at standard conditions of 4.5.1 plus 24 hours at 49O5loC (120f20F) with a minimum relative humidity of 25 percent. Preparat
49、ion of test panels and fixtures. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.5,2.2 Cleaning of panels. Except where otherwise specified, panels shall be cleaned with lint ree cheesecloth conforming to MIL-C-87962, using solvent ormulated in accordance with Table V. rinsing, the panels shall be wiped with a clean lint free cloth.
