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 5985-00-801-1943
NSN 5920-01-467-2079
NSN 5910-01-335-6449
NSN 5905-01-449-1291
NSN 6110-00-768-7583
NSN 6620-01-469-7828
NSN 5925-01-353-7819
NSN 5985-00-835-1218
NSN 5925-01-385-7855
NSN 6145-00-532-6341
NSN 5935-00-362-3873
NSN 6110-00-253-9523