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 6645-01-578-6309
NSN 5975-00-269-8391
NSN 7035-01-547-3531
NSN 5915-00-747-9679
NSN 6610-01-512-2025
NSN 5895-00-916-1728
NSN 6110-01-173-3283
NSN 7035-00-931-9415
NSN 5915-00-503-5576
NSN 6150-01-530-0474
NSN 5915-01-129-4605
NSN 6105-00-107-3315