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 7035-00-529-3128
NSN 4140-00-763-6527
NSN 5910-01-452-6112
NSN 6105-01-292-9756
NSN 5835-01-460-6054
NSN 5855-01-533-7051
NSN 6105-01-391-2042
NSN 6320-01-352-5653
NSN 6220-01-154-3213
NSN 5920-01-338-1410
NSN 5950-01-293-8484
NSN 6610-01-633-8931