A-A-52444 Gaskets: Combination Of Metal And Nonasbestos Facing Material (Metric)This CID covers three types of combination gaskets made from a combination of metal and nonasbestos facing material. These combination gaskets are used in automotive vehicle engine applications where they will be subjected to high temperatures as in cylinder heads and exhaust manifolds. The combination gaskets are referred to herein as "gaskets".

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A-A-52444A

3.2.5 Coating. To prevent seizure to metallic surfaces, a coating of pulverized carbon containing a binder, or equivalent material, shall be evenly applied to the nonasbestos material surfaces of type I and type II gaskets. Unless otherwise specified in the AED, type III gaskets shall be coated with lacquer or varnish.

3.3 Performance.

3.3.1 Compressibility. The gaskets shall be capable of withstanding a 13.8 megapascals (MPa) load without rupture and compress 10 to 20% from original thickness.

3.3.2 Liquid absorption. The nonasbestos gasket material shall show no increase in weight in excess of 20% after being immersed for 22 hours and shall show no evidence of disintegration or of becoming soft or spongy after immersion. This shall be verified using the immersion fluids and test procedures of ASTM F146.

3.3.3 Resistance to boiling water. When immersed in boiling water for 2 hours, the nonasbestos material shall not become soft or spongy and shall not separate from the metal sheet.

3.3.4 Moisture loss. The moisture loss of the nonasbestos material shall not be more than two percent by weight when subjected to a temperature of 82 degrees Celsius (°C) until weight becomes constant.

3.3.5 Flexibility. The metal and nonasbestos material in type I and type II gaskets shall not separate when bent around a 50.8 mm mandrel.

3.4 Identification and marking. Unless otherwise specified in the AED, identification and marking of gaskets shall be permanent and legible and shall include, as a minimum, the AED part number and the manufacturer’s CAGE code and part number (see 7.2).

4. REGULATORY REQUIREMENTS. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR).

5. PRODUCT CONFORMANCE PROVISIONS

5.1 Responsibility for inspection. The contractor is responsible for all inspections, including examinations and tests.

5.2 Contractor certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of this CID and that the product conforms to the producer’s own drawings, specifications, workmanship standards, and quality assurance practices. Items with known defects shall not be submitted for Government acceptance. The Government reserves the right to require proof of such conformance prior to the