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 5910-00-971-5706
NSN 5910-01-450-4309
NSN 7035-00-981-7216
NSN 6105-01-415-3314
NSN 5965-00-404-3317
NSN 5945-01-451-0336
NSN 6620-01-423-0833
NSN 5910-01-499-6690
NSN 5930-00-149-1696
NSN 5910-00-974-5498
NSN 6110-01-442-6665
NSN 5925-01-422-7967