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 6110-00-901-3481
NSN 6620-01-604-7532
NSN 5975-01-025-1554
NSN 6105-01-446-7245
NSN 6135-00-782-6988
NSN 6620-00-935-1321
NSN 5945-01-552-3913
NSN 5855-01-593-0822
NSN 6135-01-398-5922
NSN 6620-01-571-0900
NSN 5905-01-323-6711
NSN 2925-00-816-8765