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 6620-01-310-4916
NSN 5915-01-524-7544
NSN 6645-01-627-6629
NSN 6240-01-283-7824
NSN 6240-01-469-5719
NSN 5935-01-121-9205
NSN 5910-01-392-1396
NSN 5835-01-090-6712
NSN 5855-00-782-7714
NSN 6105-00-664-1292
NSN 5999-00-812-7816
NSN 6145-01-529-7653