1、MIL-S-45180D MIL-S-45180C 31 May 1974 MILITARY SPECIFICATION SEALING COMPOUND, GASKET, HYDROCARBON FLUID AND WATER RESISTANT This specification is approved for use by the Army Materials and Mechanics Research Center, Department of the Army, and is available for use by all Departments and Agencies of
2、 the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers requirements for thread and gasket sealing compounds that are resistant to fuel, engine oils, and water. 1.2 Classification. This specification covers three types of sealing compound S : Type I - Hardening Type II - Nonhardeni
3、ng Type III - Nonhardening (low viscosity) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. Unless otherwise specified, the following specifications, standards, and handbooks of the issue listed in that issue of the Department of Defense Index of Spec
4、ifications and Standards (DoDISS) specified in the solicitation form a part of this specification to the extent specified herein. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Director, US Arm
5、y Materials and Mechanics Research Center, ATTN: DRXMR-SMS, Watertown, PIA 02172 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or /by let ter. / FSC 8030 / Provided by IHSNot for ResaleNo reproduction or networking perm
6、itted without license from IHS-,-,-MIL-S-45LBOD 80 H 999770b OLOb72L 9 m MIL-S-45180D SPECIFICATIONS FEDERAL O-A-548 - Antifreeze/Coolant, Engine, Ethylene Glycol, Inhibited, -k-250/4 - Aluminum Alloy 2024, Plate and Sheet GQ-B-613 - Brass, Leaded and Nonleaded, Flat Products (Plate, Bar, QG-C-576 -
7、 Copper Flat Products with Slit, Slit and Edge-rolled, Concentrated Sheet and Strip) Sheared, Sawed or Machined Edges (Plate, Bar, Sheet and Strip 1 E,-T-425 - Tinplate (Electrolytic) TT-S-735 - Standard Test Fluids, Hydrocarbon WW-T-700/1 - Tube, Aluminum, Drawn, Seamless, 1100 PPP-C-96 - Can, Meta
8、l, 28 Gage and Lighter PPP-T-1637 - Tube, Shipping, Collapsible STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes MIL-STD-129 - Marking for Shipment and Storage MIL-STD-1188 - Commercial Packaging of Supplies and Equipment 2.1.2 Other Government documents,
9、drawings, and publications. The following other Goverment documents, drawings, and publications form a part of this specification to the extent specified herein. DEPARTMENT OF TRANSPORTATION ICC ATA Ill-D - Department of Transportation Regulations - Transportation of Hazardous Materials (Application
10、 for copies should be addressed to the ATA Traffic Department, 1616 P Street, N. W., Washington, DC 20036.1 DRAWINGS AIR FORCE - NAVY AERONAUTICAL STANDARDS AN 817 - Nut, Tube Coupling, long 2.2 Other publications. The following document(s) form a part of this specification to the extent specified h
11、erein. The issues of the documents which are indicated as DoD adopted shall be the issue listed in the current DoDISS and the supplement thereto, if applicable. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-qSLBOD BO m 9999906 0106922 O MIL
12、-S-45180D AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) (Applications for copies of ASTM publications should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103). (Industry association specifications and standards are generally available for r
13、eference from libraries. They are also distributed among technical groups and using Federal agencies). 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein, the text of this specification shall take precedence. 3. F93QUIFtEMENTS 3
14、.1 Solubility. The solubility of the sealing compound shall be as specified in table I when tested in accordance with 4.6.2. The aromatic fluid and ethylene glycol shall conform to the specifications in table I. The solubility of type III material in water shall be tested in accordance with 4.6.8. T
15、ABLE I. Solubility. Type 1 Type II Type III Fluid % Max. % Max. % Max. Aromatic fluid, TT-S-735, type II 12 10 15 Aromatic fluid, TT-S-735, type III. 8 9 12 Ethylene glycol, O-A-548 8 5 13 Distilled water ASTM D471 Oil No. 1 4 8 6 10 2 4 ASTN D471 Oil No. 2 8 10 4 ASTM D471 Oil No. 3 8 10 4 3 Provid
16、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-45LBOD 80 9 7777706 0306723 2 MI1-S-45180D 3.2 Torque release. The torque release shall not be more than the following applicable maximum percent increase when tested in accordance with 4.6.3: Type I -
17、100 percent Type II - 70 percent Type III - 40 percent 3.3 Volatile content. The volatile content shall be as follows when tested in accordance with 4.6.4: Type I - 15. O - -k 3 percent Type II - 13. O + 2 percent Type III - 24. O 7 - 3 percent 3.4 Flow test (vertical). Flow shall not be more than 1
18、/4 inch (6.3 mm) when tested in accordance with 4.6.5. 3.5 Viscosity. The viscosity of the sealing compound shall be as specified in table II when tested in accordance with 4.6.6. TABLE II. Viscosity. Type I Type II Type III 4,000-20,000 poises 4,000-20,000 poises 30-680 poises (3,000-68,000 centipo
19、ises) 3.6 Ash content. The ash content of the sealing compound shall be as follows when tested in accordance with 4.6.7: Type I - 48 + 5 percent Type II - 48 7 5 percent Type III - 15 2 3 percent c 3.7 Water-soluble material (type III only). The nonvolatile portion of the compound shall not be more
20、than 2 percent soluble in water when tested in accordance with 4.6.8. 3.8 Corrosion. The following metals (of tkle specification as shown in table III) after 5 day treatment (immersion) with the compound as specified in 4.6.9, shall not exceed the maximum change in weight (loss or gain) as listed in
21、 table III. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-45180D TABLE III. Corrosion loss or gain in weight. Maximum loss or gain in milligrams per square centimeter (mg/Cm2) Test strip specification Type I Type II Type III Tinned Iron Ste
22、el Aluminum Alloy Cast Iron Brass 0.7 0.7 O. 7 O. 7 O. 7 0.7 0.1 0.1 0.1 1.2 3. O 1.2 0.3 0.3 O. 3 Copper 0.2 o. 2 o. 2 3.9 Flash point. The flash point of the sealing compound shall not be less than 1OoC(500F) when tested in accordance with 4.6.10. 3.10 Flexibility (types II and III only). The flex
23、ibility of the sealing compound shall be as follows when tested in accordance with 4.6.11: Type II sealing compound shall not crack when flexed at -34 + 1% (-30 + 2OF). - - Type III sealing compound shall not crack when flexed at -34 + l0C (-30 + 2OF). - - 3.11 Consistency. Types I and II sealing co
24、mpound shall be of such con- sistency that it may be applied with a spatula or stiff brush (see 4.5.1). Type III sealing compound shall be of such consistency that it may be applied with an ordinary paint brush. 3.12 Toxicity. The gasket sealing compound shall have no adverse effect on the health of
25、 personnel (see 6.3). 3.13 Workmanship. The compound shall be a smooth and homogenous mixture, free from lumps, caked material, and particles of foreign matter. 4. CUALITY ASSURANCE PEOVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the con- tract or purchase order, the cont
26、ractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise speci- fied in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless
27、 disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the speci- fication where such inspections are deemed necessary to assure supplies and services conf om to prescribed requirements. 4.2 Classification of inspections. All inspection shall
28、 be to determine compliance with the requirements of this specification to serve as a basis for acceptance. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-4SlBOD 4.3 - Lot. A lot shall consist of sealing compound from the same manu- facturer
29、s batch. A batch is defined as that quantity of material which has been subject to some unit chemical or physical mixing process intended to make the final product substantially uniform. 4 . 4 Sampling. 4.4.1 Examination. Unless otherwise specified, a random sample of Eilled containers shall be sele
30、cted in accordance with level S-1 of MIL-STD-105. 4.4.2 Tests. A sample consisting of one gallon of sealing compound shall be taken from each lot for tests. 4.5 Examinat ion. 4.5.1 Visual. Sample units selected in accordance with 4.4.1 shall be examined for the defects and at the acceptable quality
31、level shown is table IV. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-qSLBOD 80 rlrirlri ri Cu n ri rl M a, a, m W Plri a,d q4-I h vi EQ HH lnW O0 rlri kk O0 m m aa ln Cu n ri ri ln a, c, m W fi a, Pl O k a, C .rl a -P F: u O MIL-S-45180D
32、ln Cu n M ri rl ln a, a, m W a a, O O rl V fi O u 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.5.2 Packaging, packing and marking for shipment. Examination shall be made for the defects and at the acceptable quality level (AQL) as shown in tab
33、le IV to determine compliance with Section 5. 4.6.2 Solubility. Each of the fluids in table V shall be used separately as the immersion medium at the indicated temperatures. TABLE V. Immersion media and temperatures. Tempe rat Ure Immersion media Type I Type II Type III Aromatic fluid, TT-S-735, 23
34、+ 20C 23 + 20C 23 + 20C type II (74-2 5OF) (74-2 5OF) (74 i 5OF) Aromatic fluid, TT-S-735, 23 + 2OC 23 + 2OC 23 2 20C type III ( 74-2 5OF) (74T 50F) (74 2 50F) Ethylene glycol 0-A-548 70 + 20C 70 + 20C 70 + 2OC (158 - + 20F) (158 2 20F) (158-+ - 20F) Distilled water ASTM Oil No. 1 ASTM Oil No 2 . AS
35、TM Oil No. 3 93 + 2oc 93 + 2oc (20 + 50F) (200 + 5OF) “- - “- - 70 + 20C 70 + 20C 70 + 20C (155 - + 2OF) (158 - + 20F) ( 15?-+ - 20F) 70 + 20C 70 + 20C 70 + PC (158 - +*20F) (155 - + 20F) ( 158-2 20F) 4.6.2.1 Test panels. Three recessed aluminum panels, conforming to the design and measurement of fi
36、gure 1, shall be used to test the solubility of each type of sealing compound in each immersion medium. The test panels shall be degreased with a suitable degreasing solvent. Care shall be exercised to avoid skin contact, inhalation, and ingestion of vapors. The panels shall then be placed in an ove
37、n at 70 + lOC (158 + 20F) for 1 h, cooled in a desiccator for 1 h, and then weighed to thenearest 1 mg. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-45180D 4.6.2.2 Procedure. The test panels (see 4.6.2.1) shall be filled to the rim of rece
38、ss with the sealing compound and dried in a circulating air oven for 48 h at 70 f 20C (158 + 20F). After removal from the oven and cooling to room temperaTure in a desiccator, the specimens shall be weighed to the nearest 1 mg and then immersed for 24 h in 250 ml of the respective fluids. For the ar
39、omatic fluids the panels shall be placed horizontally in the containers to prevent flow of the compounds. For the boiling water container a reflux con- denser is necessary to prevent loss of water. All immersion containers shall be covered to prevent loss of immersion fluid by evaporation. After eth
40、ylene glycol immersion, excess glycol shall be removed by immersing the specimen in water at 23 + 2OC (74 + 50F) for 15 min. After immersion, all specimens shall be dried-in a circlating air oven at 70 + lOC (158 + 2OF) for 24 h. After removal from the oven, the specimens shall be coolea to room tem
41、perature in a desiccator for 1 h before weighing. Test panels shall be reweighed and percent change in weight shall be calculated as follows: % change in weight = W1 - W2 x 100 W1 - wp Where : W1 = weight of the panel plus sealing compound before immersion. W2 = weight of the dried panel plus sealin
42、g compound after immersion. 4.6.3 Torque release (test fittings). Three hydraulic fitting assemblies comprised of a union, and an AN-817 nut, and a section 1/2-in flared aluminum tubing conforming to W-T-700/1 shall be utilized for this test. The sealing compound shall be brushed on the threads of t
43、he clean union to fill the threads approximately level, and then assembled with nut and tubing. After assembly has been completed, excess compound which has extruded shall be wiped from the flange. The assembly shall be tightened to 200 in-lbs. torque and placed in a circulating air oven for.7 days
44、at 70 + 1OC (158 + 20F). After removal from the oven, excess compound on the-outer edge-of the joint shall be removed by scraping and the assembly shall be placed in a desiccator at room tem- perature for 24 h. Torque required to break the seal shall then be determined with the same wrench used for
45、the assembling of the fittings. Results shall be reported as the average of the three readings. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-45LAOD AO W 7777706 OLOb727 3 m MIL-S-4 5180D 4.6.4 Volatile content, Approximately 5 g of the compo
46、und shall be placed in an accurately weighed flat-bottom, metal dish having a diameter of about 6 cm and depth of about 2 cm. The dish with the compound shall be weighed and then placed in a circulating air oven at 700 + lOC (158 + 20F) for 48 h. After removal from the oven, the dish shail be coolex
47、 to room temperature in a desiccator for 1 h and then reweighed. Percent of volatile content shall be calculated as follows: Volatile content, percent = W1 - W2 x 100 WI - Va I U Where : W1 = weight of dish and sample before drying. W2 = weight of dish and sample after drying. Wd = weight of empty d
48、ish. 4.6.5 Flow test (vertical). 4.6.5.1 Types I and II. Three aluminum alloy panels conforming to QQ-A-250/4 approximately 1 in by 6 in (25 mm by 150 mm) shall be coated over a 1 in by 2 in (25 mm by 50 mm) section with 1/8-in coating of sealing compound. A scribe line shall be made on the uncoated
49、 surface of the metal 1/4 in (6mm) below the compound. Immediately after coating, the panels shall be placed in the vertical positions with the scribe line at the bottom and allowed to stand in this position for 1 h at YO0 + lOC (158 + 20F) to determine the flow of the com- pound in reference t the scribe line. Results shall be reported as the average flow of the three readings. 4.6.5.2 Type
