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 5985-00-251-8193
NSN 5935-00-081-7212
NSN 5945-01-464-9343
NSN 5950-00-602-1055
NSN 5855-01-173-0808
NSN 5855-01-329-3568
NSN 5999-01-188-3756
NSN 6130-01-352-5644
NSN 5935-01-268-4836
NSN 5945-01-148-8456
NSN 5975-01-321-5918
NSN 6650-00-882-3576