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 5910-01-465-9843
NSN 5960-01-328-8248
NSN 5895-01-089-7518
NSN 5925-00-467-1738
NSN 2925-01-099-7075
NSN 5855-01-136-9532
NSN 6650-01-116-4650
NSN 5910-00-700-3360
NSN 5999-01-197-6952
NSN 6645-01-362-2587
NSN 5985-01-294-7665
NSN 5985-01-014-6492