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 5930-01-634-0659
NSN 5935-00-831-9133
NSN 6130-01-254-1548
NSN 5945-01-489-5519
NSN 6240-01-474-5383
NSN 5935-01-304-7377
NSN 5935-01-406-3486
NSN 6220-01-625-3368
NSN 5965-01-476-8539
NSN 6105-01-495-0623
NSN 5985-00-586-3505
NSN 5895-01-420-2370