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 6150-00-988-6997
NSN 6135-01-265-1384
NSN 5855-01-358-5253
NSN 6685-01-058-5998
NSN 6135-00-100-0485
NSN 5965-00-300-8055
NSN 6105-01-214-3214
NSN 5935-01-444-1517
NSN 5965-01-204-8505
NSN 7035-01-083-0282
NSN 5999-01-221-6081
NSN 6145-00-734-4554