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 5960-01-052-8228
NSN 6645-01-519-6324
NSN 5910-01-224-9280
NSN 5855-00-763-2155
NSN 6135-00-269-5843
NSN 6240-00-571-8449
NSN 6145-01-414-8272
NSN 6610-01-255-4544
NSN 5915-01-416-1528
NSN 5996-01-397-0651
NSN 5915-00-452-2227
NSN 5999-00-518-1007