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 5925-01-435-5869
NSN 6220-01-377-4957
NSN 6685-00-058-9526
NSN 5920-01-574-0610
NSN 6105-01-465-0193
NSN 6105-00-153-7967
NSN 6105-00-957-8237
NSN 6220-01-038-8292
NSN 6685-01-617-8378
NSN 6645-01-525-7493
NSN 2925-01-180-7789
NSN 5925-01-076-0897