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 6620-00-930-5680
NSN 5930-01-626-9092
NSN 5985-01-584-1002
NSN 6110-01-116-2353
NSN 5895-01-430-9074
NSN 6685-00-647-3883
NSN 6105-00-490-6035
NSN 5925-00-624-3060
NSN 5905-01-295-6892
NSN 6320-00-456-0836
NSN 6650-01-102-7847
NSN 6645-01-626-6643