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 5920-01-337-6375
NSN 5930-00-111-4301
NSN 6145-01-295-6482
NSN 5925-01-261-1677
NSN 6685-01-474-6470
NSN 5920-00-196-3631
NSN 5930-01-418-2433
NSN 5950-00-082-1616
NSN 7035-01-271-1643
NSN 4140-01-449-2131
NSN 5930-00-087-9128
NSN 6150-01-149-5833