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 6130-01-481-3599
NSN 6105-01-473-5859
NSN 5935-01-374-9073
NSN 6610-01-623-5423
NSN 7035-01-510-8787
NSN 5920-01-314-4858
NSN 6610-00-250-5344
NSN 5910-01-422-1699
NSN 6620-01-535-0070
NSN 5998-00-950-4966
NSN 5905-01-371-6861
NSN 5985-00-016-4960