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 6110-01-282-4565
NSN 2925-00-295-8109
NSN 6135-00-027-3914
NSN 2925-01-556-0333
NSN 5985-01-419-1463
NSN 5985-01-281-7333
NSN 4140-01-416-2798
NSN 5975-01-123-5278
NSN 5960-00-322-5394
NSN 4140-01-136-2204
NSN 6320-01-466-4175
NSN 6130-00-267-9970