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 5999-01-046-9029
NSN 6320-00-035-8781
NSN 5895-00-117-4257
NSN 6645-00-459-3313
NSN 5996-01-476-2131
NSN 6320-01-486-8004
NSN 5905-00-939-4798
NSN 7035-01-211-5636
NSN 5965-01-360-6568
NSN 6130-00-547-1036
NSN 5998-00-623-2561
NSN 6135-01-226-4071