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 5985-00-809-5851
NSN 5925-00-337-8138
NSN 5945-01-433-4669
NSN 6685-01-224-7481
NSN 6650-01-420-5586
NSN 2925-01-359-9818
NSN 5990-01-258-3848
NSN 7035-01-646-2351
NSN 5930-00-734-6138
NSN 6240-01-020-9910
NSN 6650-01-627-5855
NSN 6130-01-462-7473