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 6135-01-074-8220
NSN 5935-01-439-3352
NSN 6105-00-263-6385
NSN 6135-01-360-1620
NSN 6130-01-358-6814
NSN 6150-00-386-1996
NSN 5895-01-245-9240
NSN 4140-01-095-8466
NSN 5975-01-659-3587
NSN 5910-00-862-3552
NSN 5996-01-123-4349
NSN 5910-01-024-0836