The spec pertains to submarine slide valve gaskets made from oil-resistant synthetic rubber and designed to control the flow of sea water between individual torpedo tubes and the torpedo ejection pump.

For first article examinations, MIL-PRF-19769 requires an initial properties testing program including tensile strength, tensile stress, ultimate elongation, hardness, and specific gravity testing. Samples are also examined for dimensions, tolerances, markings, and workmanship. Further properties testing is conducted after environmental conditioning:
  • After oven aging, samples are subjected to tensile strength, tensile stress, ultimate elongation, compression set, and hardness testing.
  • After oil submersion, samples are subjected to swell, tensile strength, tensile stress, and ultimate elongation testing. 
Many of these tests are repeated for batch and lot acceptance. 

How Smithers Supports MIL-PRF-19769

Smithers supports defense manufacturers and suppliers through independent testing and technical assessment for elastomer sealing materials used in demanding naval applications. Our specialists help evaluate material performance, fluid compatibility, environmental durability, and long-term sealing performance to support qualification activities and generate trusted technical evidence for defense applications. 

Explore our Defense Materials and Qualification capabilities to learn more.

MIL-PRF-19769 is a valuable standard for validating the performance of submarine slide valve gaskets in submerged torpedo tubes. The spec supports better operations during Naval applications by ensuring material quality.

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