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 5935-00-346-2738
NSN 6150-00-972-2598
NSN 5835-00-447-1924
NSN 6620-01-443-3526
NSN 4140-01-025-1555
NSN 5930-01-202-4870
NSN 5975-01-437-6699
NSN 6150-01-381-7210
NSN 5925-01-643-9262
NSN 6130-00-005-1633
NSN 6685-00-578-0974
NSN 5960-01-094-5958