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 5999-01-512-4807
NSN 5945-01-449-7909
NSN 6650-00-395-8712
NSN 6110-01-579-3399
NSN 6240-01-023-2013
NSN 4140-01-108-4609
NSN 5925-01-634-0664
NSN 5910-01-303-0239
NSN 6145-01-089-8854
NSN 6110-01-332-2513
NSN 5945-00-851-3553
NSN 5915-01-482-1334