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 5990-00-167-2692
NSN 6610-01-141-7014
NSN 5990-00-831-5359
NSN 6145-01-422-8603
NSN 5998-01-037-0622
NSN 5895-01-028-3248
NSN 5999-00-035-9288
NSN 6685-01-458-6469
NSN 5950-00-689-1215
NSN 7035-00-413-0992
NSN 5895-00-156-4939
NSN 5910-01-384-3696