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 5925-01-248-6232
NSN 6620-01-535-1230
NSN 6650-00-283-0978
NSN 5925-01-113-8272
NSN 5905-01-414-3917
NSN 4140-01-432-0292
NSN 6240-01-503-3405
NSN 5998-01-545-3703
NSN 5895-01-320-4458
NSN 6320-01-311-6576
NSN 5950-00-136-7165
NSN 4140-01-426-8428