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 6105-00-998-7747
NSN 5975-01-454-8318
NSN 5915-00-970-6590
NSN 5999-01-361-4686
NSN 5965-01-652-3339
NSN 6320-00-036-3688
NSN 5960-00-846-9042
NSN 6610-00-794-4967
NSN 6240-01-186-3273
NSN 6145-01-213-6635
NSN 6610-01-421-4396
NSN 5960-01-293-6624