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 6685-01-521-2672
NSN 6220-00-594-4561
NSN 5920-01-013-7831
NSN 5998-01-184-9339
NSN 5915-01-146-2058
NSN 6105-01-416-8393
NSN 6240-01-415-2349
NSN 6240-01-118-7624
NSN 6220-01-136-0339
NSN 4140-01-374-8004
NSN 6110-00-003-8586
NSN 5975-01-246-0272