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 6650-00-292-9106
NSN 5925-01-287-3086
NSN 5950-00-802-0927
NSN 5990-01-507-1479
NSN 5930-01-532-7969
NSN 6130-01-239-9831
NSN 6620-00-851-5381
NSN 6105-00-840-6433
NSN 6650-01-396-8890
NSN 5950-01-084-1005
NSN 5910-00-070-2245
NSN 5950-00-051-2301