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 6610-01-535-0310
NSN 6220-01-336-0130
NSN 5950-00-487-8669
NSN 5996-00-521-6616
NSN 5920-01-111-7178
NSN 6320-01-118-6662
NSN 5935-00-276-9399
NSN 6645-00-269-8440
NSN 5965-01-381-4879
NSN 6220-01-344-1647
NSN 5998-00-081-7930
NSN 5855-01-205-7030