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 5960-01-472-9562
NSN 5985-00-334-9245
NSN 2925-01-397-8028
NSN 5945-01-455-0859
NSN 5905-01-185-4148
NSN 4140-00-790-7995
NSN 5999-01-442-6438
NSN 5965-00-995-2075
NSN 5985-00-907-6160
NSN 5930-01-660-7668
NSN 6645-00-467-6094
NSN 5915-00-739-7331