1、Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Sea Systems Command, ATTN: SEA 05M2, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to CommandStandardsnavy.mil, with the subject line “Document Comment”. Since contact
2、 information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 5330 INCH-POUND MIL-DTL-24696C(SH) 5 September 2008 SUPERSEDING MIL-G-24696B(SH) 25 May 1995 DETAIL SPECIFICATION GASKET, SHEET, NON-AS
3、BESTOS This specification is approved for use by the Naval Sea Systems Command, Department 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 establishes the requirements of non-asbestos sheet gasket material for
4、 non-propulsion and propulsion steam and water applications and for all petroleum based hydraulic and lube oil applications. 1.2 Classification. 1.2.1 Types. Type I Gaskets exposed to saturated steam service up to 366 F and 150 pounds per square inch gauge (psig) Type II Gaskets not exposed to steam
5、 for (1) water service applications up to 300 F and 1800 psig, (2) lube oil service up to 250 F and 150 psig, and (3) hydraulic oil service up to 180 F and 600 psig 1.3 Part or identifying number (PIN). PINs to be used for non-asbestos sheet gasket material acquired to this specification are created
6、 as follows: This example describes a part numbering system for MIL-DTL-24696. Example of reference part number: M24696/1-001ADash number: 001-031: Table I 051-077: Table II Gasket type: A Type I B Type II Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
7、,-,-MIL-DTL-24696C(SH) 2 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as example
8、s. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, st
9、andards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL STANDARDS FED-STD-313 - Material Safety Data,
10、 Transportation Data and Disposal Data for Hazardous Materials Furnished to Government Activities (Copies of this document are available online at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Phi
11、ladelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM D471 - Standard Test Met
12、hod for Rubber Property-Effect of Liquids (DoD adopted) ASTM D512 - Standard Test Methods for Chloride Ion in Water (DoD adopted) ASTM D1179 - Standard Test Methods for Fluoride Ion in Water (DoD adopted) ASTM D1246 - Standard Test Method for Bromide Ion in Water (DoD adopted) ASTM D3223 - Standard
13、Test Method for Total Mercury in Water (DoD adopted) ASTM D3557 - Standard Test Methods for Cadmium in Water ASTM D4190 - Standard Test Method for Elements in Water by Direct-Current Plasma Spectroscopy ASTM D4327 - Standard Test Method for Anions by Chemically Suppressed Ion Chromatography ASTM F36
14、 - Standard Test Method for Compressibility and Recovery of Gasket Materials (DoD adopted) ASTM F37 - Standard Test Methods for Sealability of Gasket Materials (DoD adopted) ASTM F38 - Standard Test Methods for Creep Relaxation of a Gasket Material (DoD adopted) ASTM F104 - Standard Classification S
15、ystem for Nonmetallic Gasket (DoD adopted) ASTM F147 - Standard Test Method for Flexibility of Non-Metallic Gasket Materials (DoD adopted) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24696C(SH) 3 ASTM F152 - Standard Test Methods for Tens
16、ion Testing of Nonmetallic Gasket Materials (DoD adopted) ASTM F1574 - Standard Test Method for Compressive Strength of Gaskets at Elevated Temperatures (Copies of these documents are available from ASTM International, 100 Barr Harbor Dr., PO Box C700, West Conshohocken, PA 19428-2959 or online at w
17、ww.astm.org.) DIN DIN 52913 - Testing of Static Gaskets for Flange Connections Compression Creep Testing of Gaskets Made from Sheets (Copies of this document are available from Deutsches Institut fr Norming e.V., Burggrafenstrae 6, 10787 Berlin, Germany or online at www.din.de.) 2.4 Order of precede
18、nce. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Qualificatio
19、n. Gaskets furnished under this specification shall be products which are authorized by the qualifying activity for listing on the applicable qualified products list before contract award (see 4.2 and 6.3). 3.2 Material. 3.2.1 Composition. The material shall not contain any asbestos. The material sh
20、all be according to the contractors design and as specified in 3.2.1.1 and 3.2.1.2. 3.2.1.1 Type I composition. The sheet gasket material shall be of a graphite laminate type with a corrosion-resistant metal core. 3.2.1.2 Type II composition. The sheet gasket material shall be composed of various or
21、ganic or inorganic materials and binders. 3.2.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requir
22、ements, and promotes economically advantageous life cycle costs. 3.2.3 Material safety data sheet (MSDS). The MSDS shall be provided in accordance with the requirements of FED-STD-313. The MSDS shall be included with each shipment of the material covered by this specification (see 6.4). 3.2.4 Toxic
23、products. The material shall have no adverse effect on the health of personnel when used for its intended purpose. Conformance shall be determined by a health hazard risk assessment (HHRA) as specified in 4.1.2. Products meeting this requirement will be issued a letter of approval by the Naval Sea S
24、ystems Command. Letters of approval shall apply solely to those products specifically evaluated for toxicity. Formulation changes in the product shall require a re-evaluation of the product for toxicity and a new letter of approval. Manufacturers shall provide a copy of the approval letter applicabl
25、e to offered products to the contracting activity before the product will be accepted as specified (see 6.2). Questions pertaining to health hazards shall be referred by the contracting activity to Chief, Bureau of Medicine and Surgery, Department of the Navy, who will act as an advisor to the contr
26、acting agency. 3.3 Dimensions and tolerances. The dimensions and tolerances of sheet gasket material shall be in accordance with table I and table II as specified (see 4.4.1.1, 4.4.1.2, and 6.2). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DT
27、L-24696C(SH) 4 TABLE I. Dimensions and tolerances for flat sheet gasket stock. Dash no. Length in (1.0) inches Thickness in inches (tolerances) Width in (1.0) inches 001 60 0.016 (0.005, -0.002) 60 002 36 0.0310.005 24 003 54 0.0310.005 31.5 004 50 0.0310.005 50 005 60 0.0310.005 60 006 75 0.0310.00
28、5007 36 0.0620.006 18 008 36 0.0620.006 36 009 40 0.0620.006 40 010 50 0.0620.006 50 011 54 0.0620.006 31.5 012 60 0.0620.006 60 013 63 0.0620.006 54 014 150 0.0620.006 50 015 48 0.0940.009 36 016 50 0.0940.009 50 017 63 0.0940.009 54 018 20 0.1250.010 12 019 24 0.1250.010 24 020 36 0.1250.010 36 02
29、1 36 0.1250.010 72 022 50 0.1250.010 50 023 60 0.1250.010 36 024 60 0.1250.010 60 025 153 0.1250.010 36 026 36 0.1880.020 24 027 36 0.1880.020 36 028 50 0.1880.020 50 029 50 0.2500.025030 12.31 0.0620.006 1 031 50 0.1250.010 10 Provided by IHSNot for ResaleNo reproduction or networking permitted wit
30、hout license from IHS-,-,-MIL-DTL-24696C(SH) 5 TABLE II. Dimensions and tolerances1/for pre-cut round gaskets. Dash no. O.D. in inches Thickness in inches I.D. in inches Number of holes Diameter of holes Bolt circle diameter 051 7.125 0.062 4 052 3.5625 0.125 0.625 053 3.625 0.125 0.6875 4 0.625 2.3
31、80 054 3.625 0.125 1.0625 055 3.8125 0.125 0.750 056 4.250 0.125 1.125 057 4.250 0.125 1.3125 4 0.562 3.125 058 5.125 0.125 1.375 059 5.5625 0.125 2.125 6 0.6875 4.4375060 5.5625 0.125 2.250 061 5.5625 0.125 2.375 6 0.562 4.4375 062 5.5625 0.125 2.500 063 6.125 0.125 2.750 064 6.125 0.125 2.875 6 0.
32、562 5 065 6.625 0.125 3.375 066 7.6875 0.125 4.500 8 0.562 6.562 067 9.0625 0.125 5.375 068 9.0625 0.125 6.375 069 2.0625 0.062 1.625 070 5.875 0.062 3 071 1 0.125 0.188 072 7.875 0.062 0.062 073 7.625 0.016 0.016 20 0.468 6.75 074 6.750 0.062 0.062 075 4.620 0.125 0.125 076 9.000 0.062 0.062 8 0.75
33、0 7.50 077 3.250 0.062 0.062 NOTES: 1/Tolerances shall be in accordance with ASME B16.21 3.4 Tensile strength. 3.4.1 Type I. Using a thickness of 0.0625 inch, tensile strength shall be a minimum of 3500 psig in the weakest axis (see 4.4.2). 3.4.2 Type II. Using a thickness of 0.0625 inch, tensile st
34、rength shall be a minimum of 1700 psig in the weakest axis (see 4.4.2). 3.5 Sealability (Type II only). The gasket shall have a leak rate not greater than 1 milliliter (mL) per hour (0.034 ounces per hour) (see 4.4.4). 3.6 Compressibility and recovery (Type II only). Compressibility shall be within
35、the range of 7 to 17 percent. Recovery shall be not less than 40 percent (see 4.4.5). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24696C(SH) 6 3.7 Creep relaxation (Type II only). Creep relaxation shall be not greater than 60 percent (see
36、 4.4.6). 3.8 Adhesion (Type II only). Adhesion shall be not greater than step 3 of the scale specified in A.6.1(g) of Appendix A (see 4.4.7). 3.9 Flexibility (Type II only). The material shall not crack or delaminate when bent around a mandrel with a diameter 12 times the nominal thickness of the ga
37、sket material (see 4.4.8). 3.10 Compressive strength. 3.10.1 Type I. Compression resistance shall be 4350 psi or higher when tested at a temperature of 750 F (see 4.4.9). 3.10.2 Type II. Compressive strength shall be such that the area change is not greater than 20 percent (see 4.4.9). 3.11 Detrimen
38、tal materials. Detrimental materials shall not exceed the maximum concentrations as specified in table III (see 4.4.3). TABLE III. Detrimental materials. Material Maximum concentration permitted (ppm) Asbestos None permitted Halogens (total of chloride, fluoride, and bromide) 1/1000 Lead 250 Mercury
39、 and compounds (none intentionally added) 2/10 Sulfur 10,000NOTES: 1/Materials containing greater than 1000 parts per million (ppm) total halogens are acceptable provided only fluorine exceeds 250 ppm and total leachable halides do not exceed 250 ppm (see 4.4.3). 2/During manufacturing, fabrication,
40、 handling, packaging, and packing, the gasket material shall not come in contact with mercury or mercury compounds. 3.12 Performance. 3.12.1 Type I performance tests (steam exposure). 3.12.1.1 Steam exposure using raised-face flanges. The gasket material shall provide a seal on two standard piping f
41、lange assemblies for 300 hours at 150 psig and maintained at a temperature of 366 F (see 4.4.10.1.1). 3.12.1.2 Steam exposure using flat-faced flanges. The gasket material shall provide a seal on one standard piping flange assembly for 100 hours at 150 psig maintained at a temperature of 366 F (see
42、4.4.10.1.2). 3.12.1.3 Steam exposure with dynamic pulse using flat-faced flanges. The gasket material shall be submitted to the following series of conditions: (1) elevated temperature exposure, (2) static elevated pressure, and (3) dynamic pulse pressure (see 4.4.10.1.3). Failure is defined as gask
43、et blow-out or loss of 100 mL per hour (3.4 ounces per hour) or more of fluid from the flange assembly. 3.12.2 Type II performance tests. 3.12.2.1 Water exposure. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24696C(SH) 7 3.12.2.1.1 Raised-
44、face flange. The gasket material shall provide a seal on two standard piping flange assemblies for 300 hours at 400 psig and be maintained at a temperature of 300 F during thermal cycles. Water system pressure shall be not less than 400 psig after each 100-hour cycle and at normal system pressure ch
45、ecks (see 4.4.10.2.1). 3.12.2.1.2 Flat-faced flange. The gasket material shall provide a seal for 100 hours at 315 psig minimum and be maintained at ambient temperature (see 4.4.10.2.2). 3.12.2.1.3 High-pressure exposure with raised-face flange. 3.12.2.1.3.1 Sealability. The gasket material shall pr
46、ovide a seal on two standard piping flange assemblies for 100 hours at 1800 psig and be maintained at a temperature of 300 F during thermal cycles. A minimum cool down time between cycles is 8 hours (see 4.4.10.2.3.1). 3.12.2.1.3.2 Blow-out test. Gasket materials shall be tested according to the blo
47、w-out test in Appendix J, at 450 F and shall maintain integrity to a limit of 4500 psig (see 4.4.10.2.3.2). 3.12.2.2 Lube oil exposure. 3.12.2.2.1 Raised-face flange. The gasket material shall provide a seal on a l-inch standard piping flange assembly for 500 hours at 150 psig and shall be maintaine
48、d at a temperature of 250 F during thermal cycles (see 4.4.10.3.1). 3.12.2.2.2 Flat-faced flange. The gasket material shall provide a seal on a 3-inch standard piping flange assembly for 500 hours at 150 psig and shall be maintained at a temperature of 250 F during thermal cycles (see 4.4.10.3.2). 3
49、.12.2.3 Hydraulic oil exposure . 3.12.2.3.1 Raised-face flange. The gasket shall provide a seal on a raised-face flange for 500 hours at 600 psig and shall be maintained at a temperature of 180 F during thermal cycles (see 4.4.10.4.1). 3.12.2.3.2 Flat-faced flange. The gasket shall provide a seal on a flat-faced flange for 500 hours at 600 psig and
