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 5998-00-993-1269
NSN 6320-01-573-3215
NSN 5855-01-046-7273
NSN 6105-01-490-6551
NSN 2925-00-118-4887
NSN 5915-00-485-2821
NSN 6685-01-531-5061
NSN 6240-00-144-4693
NSN 5945-00-316-3389
NSN 5965-01-165-9787
NSN 4140-01-619-8446
NSN 5835-01-398-3859