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 5915-01-577-3870
NSN 5960-00-844-5967
NSN 5998-01-124-6589
NSN 6110-01-357-0745
NSN 6645-01-470-4688
NSN 6240-01-397-1924
NSN 5935-00-055-1048
NSN 7035-00-908-4933
NSN 5895-01-072-4291
NSN 6105-01-643-1465
NSN 6610-01-426-5090
NSN 4140-00-973-8185