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 5905-01-370-4989
NSN 5895-01-342-5159
NSN 5930-00-248-0983
NSN 2925-01-157-9204
NSN 5930-01-413-0369
NSN 5965-01-553-2276
NSN 5835-00-930-8500
NSN 5895-00-596-8678
NSN 6110-01-502-8224
NSN 6110-01-422-0834
NSN 5905-01-350-4517
NSN 6240-00-822-4571