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 4140-01-512-8528
NSN 5999-00-284-4342
NSN 5975-01-415-0068
NSN 6685-01-590-2160
NSN 7035-01-633-8861
NSN 5910-01-114-9085
NSN 5950-00-407-2246
NSN 5996-01-324-1827
NSN 6110-00-925-0480
NSN 6145-01-158-6794
NSN 6105-00-548-0622
NSN 6645-01-256-3375