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 5910-00-754-0444
NSN 5855-01-462-0495
NSN 6620-01-441-0240
NSN 2925-00-698-4882
NSN 5910-00-585-0361
NSN 5945-00-994-9389
NSN 5965-01-483-1610
NSN 5925-01-433-2535
NSN 6150-01-425-6009
NSN 6320-01-129-9656
NSN 6320-00-336-9123
NSN 6135-01-134-7222