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 5935-01-118-3883
NSN 5920-01-163-0551
NSN 5996-01-643-2523
NSN 5905-01-178-4195
NSN 6150-01-054-0310
NSN 6650-01-167-5604
NSN 6685-00-245-4550
NSN 5945-00-490-7992
NSN 6240-01-358-9980
NSN 6610-01-057-3408
NSN 6105-00-080-0648
NSN 5915-00-234-0809