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 5960-00-071-0698
NSN 5915-01-173-9026
NSN 5905-00-223-4635
NSN 4140-00-285-6042
NSN 6150-00-920-7030
NSN 5960-00-314-0991
NSN 5965-01-533-4851
NSN 5950-00-657-2412
NSN 5996-01-630-1611
NSN 6220-01-529-6728
NSN 6685-00-620-4432
NSN 5950-00-085-5501