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 5990-00-783-1069
NSN 5990-00-229-4647
NSN 5910-01-497-0120
NSN 5985-00-472-7848
NSN 6320-01-592-6248
NSN 5985-01-015-5913
NSN 6105-01-007-5472
NSN 6240-01-416-0805
NSN 5835-00-368-4182
NSN 6650-00-555-1061
NSN 5965-01-385-7813
NSN 6105-01-355-9721