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 5945-00-267-3036
NSN 5985-00-995-4709
NSN 6610-00-856-7136
NSN 6645-01-121-4584
NSN 5945-00-463-3383
NSN 5895-01-416-2885
NSN 4140-01-397-7456
NSN 7035-00-455-7666
NSN 5975-01-464-4293
NSN 2925-01-182-9924
NSN 6685-00-761-9655
NSN 5998-00-153-3828