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 5998-01-371-2527
NSN 7035-01-089-3521
NSN 5835-00-427-2772
NSN 5910-01-431-5825
NSN 5835-01-518-4300
NSN 5925-01-413-7673
NSN 5915-00-067-7464
NSN 5835-01-281-7281
NSN 5915-01-650-4450
NSN 5999-01-207-9082
NSN 6110-01-010-0905
NSN 2925-00-247-1242