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 5965-00-734-5053
NSN 5998-01-358-4113
NSN 6105-00-451-6563
NSN 5915-00-175-8657
NSN 6240-01-400-1311
NSN 6650-00-127-0072
NSN 6650-01-481-8009
NSN 5975-00-719-9793
NSN 5945-00-323-8367
NSN 6110-01-418-0802
NSN 5945-00-480-5164
NSN 6145-00-299-7757