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 2925-01-359-4027
NSN 5835-00-409-8355
NSN 5925-00-031-4108
NSN 5935-01-432-4245
NSN 5855-00-298-0261
NSN 5895-01-473-2729
NSN 5998-00-222-5015
NSN 6685-01-634-0611
NSN 4140-01-531-0515
NSN 6145-01-577-7365
NSN 5975-01-395-9974
NSN 5835-01-595-1131