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 5915-00-169-6845
NSN 6110-01-152-2547
NSN 6685-00-135-0673
NSN 5996-01-012-0436
NSN 6685-01-526-9320
NSN 6240-01-364-2305
NSN 5999-01-588-3077
NSN 5910-00-125-2426
NSN 6145-01-648-6793
NSN 5920-01-394-5003
NSN 5855-00-455-6070
NSN 6135-00-269-5843