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 5965-01-113-6654
NSN 5965-00-961-1627
NSN 5945-01-423-5640
NSN 6650-01-450-3158
NSN 5930-01-072-2866
NSN 5999-01-435-6568
NSN 6145-00-538-9885
NSN 5990-01-067-1775
NSN 6645-00-704-3630
NSN 6105-00-153-7967
NSN 5996-01-396-7705
NSN 5895-01-272-9740