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 6685-01-141-7746
NSN 6685-01-393-4663
NSN 5835-01-268-1924
NSN 6620-01-545-7396
NSN 5910-00-263-7884
NSN 6685-01-004-6182
NSN 5910-00-905-0394
NSN 5905-01-210-6685
NSN 5925-01-197-2586
NSN 7035-01-535-7320
NSN 6320-01-029-4220
NSN 5935-00-889-5188