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 5960-00-768-0844
NSN 7035-00-782-7046
NSN 5930-01-264-0287
NSN 5935-01-593-2436
NSN 5985-00-930-8698
NSN 5950-00-528-1446
NSN 6130-00-070-1513
NSN 5925-01-363-7271
NSN 5960-00-987-1509
NSN 5935-00-912-9963
NSN 5985-00-023-2211
NSN 6320-00-593-0379