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 6145-01-372-3585
NSN 6610-01-618-4603
NSN 5915-01-451-4332
NSN 5895-01-279-5317
NSN 6645-01-525-7493
NSN 6620-01-115-2926
NSN 6650-01-571-7122
NSN 5915-01-591-7452
NSN 5999-01-113-8120
NSN 5905-01-569-2318
NSN 5998-01-419-9401
NSN 5975-01-444-9479