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 5855-00-089-3974
NSN 6650-01-170-5440
NSN 2925-00-118-4887
NSN 6650-01-512-9650
NSN 6240-01-202-3179
NSN 6320-01-287-0540
NSN 5975-00-683-5869
NSN 6610-01-328-3400
NSN 7035-00-193-2269
NSN 5925-01-540-2462
NSN 5950-01-089-0576
NSN 6130-01-507-8663