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 6135-01-578-1148
NSN 6145-00-715-5262
NSN 5910-01-067-7406
NSN 6145-01-575-7840
NSN 6130-00-190-2933
NSN 6240-00-287-1988
NSN 6105-01-021-2179
NSN 6220-00-954-0442
NSN 5996-01-297-0740
NSN 5915-01-535-0918
NSN 5930-01-442-5807
NSN 6105-01-287-5133