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 5990-01-392-5682
NSN 6145-01-363-6149
NSN 6145-01-033-0050
NSN 6610-01-633-8931
NSN 6110-01-475-8275
NSN 6145-01-309-2428
NSN 5915-01-463-4262
NSN 5855-01-499-8692
NSN 6105-01-205-3268
NSN 5910-00-672-1998
NSN 5835-01-535-8470
NSN 5930-01-621-6613