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 5935-01-126-8855
NSN 5925-00-689-8068
NSN 5975-01-514-8114
NSN 5905-01-469-5478
NSN 5935-01-169-5111
NSN 5920-01-009-1307
NSN 5996-00-437-5865
NSN 6135-00-932-3136
NSN 6220-01-333-7978
NSN 5905-01-056-2153
NSN 5920-00-231-3922
NSN 6685-01-095-1089