A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 5855-00-237-4088
NSN 6105-01-118-2091
NSN 6150-01-347-3615
NSN 6220-01-440-8536
NSN 5965-01-265-6814
NSN 6320-01-374-9924
NSN 5996-01-164-6758
NSN 6135-01-074-8220
NSN 5920-01-306-5053
NSN 5935-01-351-2334
NSN 6620-00-735-2892
NSN 6145-01-215-9236