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 5975-01-344-9760
NSN 6685-00-896-3042
NSN 5990-01-525-2250
NSN 5895-01-516-9475
NSN 5945-01-093-4304
NSN 5990-01-599-7106
NSN 5990-01-507-7495
NSN 5975-00-525-9196
NSN 6130-01-167-7418
NSN 5996-01-286-2375
NSN 6145-00-405-2737
NSN 6620-00-453-8180