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 7035-00-860-9645
NSN 6105-01-418-0405
NSN 5925-00-912-9343
NSN 5996-01-350-7147
NSN 7035-01-423-8317
NSN 5935-00-411-8408
NSN 5996-01-181-2697
NSN 5975-01-426-3279
NSN 5895-01-503-1063
NSN 7035-01-349-7883
NSN 5925-01-584-4238
NSN 6145-00-177-4731