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 7035-00-235-3529
NSN 5998-01-523-7254
NSN 6135-00-840-6451
NSN 6650-00-590-9073
NSN 6320-00-593-0379
NSN 5855-01-141-8227
NSN 5998-01-176-6672
NSN 5905-01-640-8735
NSN 5905-01-122-9722
NSN 5945-00-422-5330
NSN 6105-01-336-4882
NSN 7035-01-016-4587