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 6135-01-439-8669
NSN 5999-00-822-2498
NSN 6135-01-071-4923
NSN 5905-00-087-1421
NSN 5945-00-177-4676
NSN 4140-00-733-7936
NSN 5990-00-067-6791
NSN 6135-00-307-6998
NSN 5835-01-492-4318
NSN 6620-00-155-2608
NSN 6130-00-776-6081
NSN 6105-00-109-8448