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 5960-01-036-8175
NSN 6135-00-803-3012
NSN 5990-00-786-9042
NSN 6105-01-227-3003
NSN 6145-01-418-5738
NSN 6685-01-487-3361
NSN 6220-01-297-3057
NSN 5975-01-376-5355
NSN 5935-01-066-3834
NSN 6110-00-036-6386
NSN 5910-00-003-8235
NSN 5965-00-518-0958