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 6150-01-090-0237
NSN 6145-01-114-8879
NSN 5990-01-285-1868
NSN 5960-01-142-1995
NSN 5930-01-256-8114
NSN 5999-00-762-4791
NSN 5985-01-529-7005
NSN 6620-01-152-0936
NSN 6610-00-056-5889
NSN 6650-01-397-1925
NSN 5965-01-653-6466
NSN 4140-01-643-8692