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 6110-01-398-6928
NSN 5835-01-339-0542
NSN 6620-01-512-2016
NSN 5935-00-521-1338
NSN 2925-01-197-7864
NSN 5910-01-069-2690
NSN 2925-01-381-5307
NSN 6110-00-431-6898
NSN 6220-00-643-4045
NSN 5925-01-401-5314
NSN 5985-01-122-7400
NSN 6130-00-419-1120