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 7035-01-550-3036
NSN 6145-01-623-8460
NSN 6645-01-182-1471
NSN 5910-01-148-3258
NSN 6320-01-578-6006
NSN 5960-01-271-8107
NSN 5985-00-890-4428
NSN 5945-01-514-8554
NSN 5925-01-241-4590
NSN 6105-00-527-7702
NSN 5945-01-448-1724
NSN 5990-01-599-4721