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 5915-00-673-7962
NSN 6320-00-831-2227
NSN 5910-01-446-7199
NSN 6645-01-177-2766
NSN 5920-00-759-1003
NSN 5910-01-013-8855
NSN 6620-01-513-8525
NSN 6145-01-246-3988
NSN 6130-00-231-9443
NSN 6650-01-472-3955
NSN 5930-00-981-8668
NSN 5895-00-753-5349