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 5996-00-448-1245
NSN 5855-00-896-4047
NSN 5998-01-630-0165
NSN 6685-01-014-5983
NSN 5910-00-715-7966
NSN 5925-01-542-9068
NSN 5990-01-571-7468
NSN 5935-01-176-5593
NSN 5895-01-138-2931
NSN 6220-01-545-8739
NSN 5855-01-125-9167
NSN 6105-01-139-4066