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 6150-01-617-4494
NSN 5935-01-416-3224
NSN 5915-01-589-7247
NSN 5930-01-626-1966
NSN 5925-01-071-3158
NSN 6150-00-023-3856
NSN 5945-01-202-8363
NSN 5945-01-461-3437
NSN 5925-01-046-9213
NSN 6645-00-399-4551
NSN 6150-01-474-9758
NSN 7035-01-467-3101