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 5945-00-529-0409
NSN 5915-01-542-9037
NSN 5835-00-409-8355
NSN 6240-01-337-2509
NSN 5855-01-041-9392
NSN 6105-00-079-6436
NSN 5935-00-316-3530
NSN 6130-01-261-2271
NSN 5905-00-375-1239
NSN 5975-00-485-9081
NSN 7035-01-183-7550
NSN 2925-01-506-3218