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 6320-00-445-1187
NSN 5925-01-354-8098
NSN 5945-01-099-7997
NSN 5998-00-527-8273
NSN 5935-01-603-4399
NSN 6145-00-909-0614
NSN 6650-00-324-4973
NSN 5925-01-565-0177
NSN 6685-01-030-3445
NSN 6650-01-183-0711
NSN 5990-00-583-9920
NSN 5990-01-472-2447