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 6110-00-103-9358
NSN 7035-01-383-6549
NSN 2925-00-323-7394
NSN 6620-00-148-9613
NSN 7035-01-429-7954
NSN 6145-01-091-4002
NSN 5990-00-386-4951
NSN 7035-01-341-6656
NSN 5965-01-105-3007
NSN 5930-00-729-8545
NSN 6145-00-008-1834
NSN 6240-01-038-0821