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 6145-00-111-5667
NSN 5895-01-204-5639
NSN 5930-00-459-5387
NSN 5925-01-164-9681
NSN 5895-01-448-2340
NSN 6150-01-648-0065
NSN 5895-00-111-1560
NSN 5915-00-300-8481
NSN 6320-00-557-3079
NSN 6650-01-406-7765
NSN 6130-01-224-7954
NSN 5996-01-292-0053