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 5960-00-303-3675
NSN 6150-00-487-4484
NSN 5985-01-262-7790
NSN 5985-01-451-4309
NSN 6130-01-156-1551
NSN 5960-00-398-1029
NSN 6620-01-180-2687
NSN 6130-01-599-2982
NSN 5935-01-265-9368
NSN 5920-00-652-2018
NSN 5910-01-345-3841
NSN 5925-00-468-2757