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 5915-00-062-9409
NSN 5910-01-644-2431
NSN 5925-01-447-1638
NSN 5930-01-114-9688
NSN 5855-00-004-0904
NSN 4140-01-578-1338
NSN 6650-01-009-5188
NSN 5930-01-435-4608
NSN 5895-01-032-4619
NSN 5935-01-005-0159
NSN 5965-00-791-0964
NSN 6320-01-600-5808