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 6220-00-507-4740
NSN 6620-01-165-1033
NSN 6620-01-388-8955
NSN 5965-01-516-6130
NSN 5925-01-528-4970
NSN 6650-01-187-9781
NSN 5945-00-226-8560
NSN 5945-00-226-8560
NSN 5998-00-467-0076
NSN 5996-01-335-3512
NSN 6645-00-901-2791
NSN 5945-01-567-1501