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 5998-00-375-8967
NSN 6240-00-768-9861
NSN 6620-00-992-5876
NSN 5990-00-926-4324
NSN 5990-00-111-3614
NSN 5930-01-008-0765
NSN 6110-01-224-7910
NSN 5985-01-122-2558
NSN 5920-01-337-1181
NSN 2925-01-379-0903
NSN 5905-00-882-7721
NSN 5960-01-399-4327