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 2925-00-652-7383
NSN 5915-01-408-0636
NSN 6105-01-137-5739
NSN 5950-00-566-1124
NSN 5965-01-570-9070
NSN 5996-00-376-5442
NSN 5835-01-176-5422
NSN 5895-01-606-4543
NSN 6685-01-311-5435
NSN 5915-01-081-3768
NSN 5996-00-679-5233
NSN 5835-01-416-6449