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 6105-01-267-5501
NSN 6645-01-223-7274
NSN 5855-01-245-8689
NSN 5998-01-609-4095
NSN 5915-01-040-4868
NSN 5855-01-095-5299
NSN 5990-01-476-8813
NSN 5835-00-484-1529
NSN 2925-00-839-6815
NSN 6610-01-003-9763
NSN 5990-00-693-7708
NSN 5996-01-520-9570