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 6105-01-209-0760
NSN 5945-01-281-7404
NSN 5925-00-272-8959
NSN 5965-01-168-8180
NSN 6685-01-588-4886
NSN 6610-01-039-0788
NSN 6130-01-149-7624
NSN 5999-00-160-9701
NSN 5998-00-134-9525
NSN 4140-00-147-8971
NSN 6145-00-337-3188
NSN 5996-01-192-7875