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 6135-01-313-4865
NSN 5835-00-949-3018
NSN 5920-01-104-6198
NSN 6105-01-313-8299
NSN 5910-00-035-5534
NSN 6650-01-209-2409
NSN 5998-00-799-6521
NSN 6110-01-519-3813
NSN 5910-01-354-1593
NSN 6620-00-795-7531
NSN 5925-01-306-0120
NSN 6645-01-422-1374