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 6610-01-485-3074
NSN 6135-01-443-4484
NSN 5925-01-011-4734
NSN 6610-01-481-5659
NSN 5935-01-130-2151
NSN 5915-01-067-8145
NSN 5920-01-498-4200
NSN 6110-01-252-6455
NSN 5915-01-122-5515
NSN 6130-01-257-2840
NSN 6145-00-914-1704
NSN 7035-01-643-5749