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 6645-00-752-2939
NSN 5945-01-157-3934
NSN 5945-01-110-2702
NSN 6135-01-472-9011
NSN 6135-00-477-8847
NSN 6135-01-301-8776
NSN 6130-01-502-8877
NSN 2925-01-623-6438
NSN 7035-01-333-9298
NSN 5915-01-441-2238
NSN 5960-00-822-6787
NSN 5835-01-024-3653