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 5998-01-658-4961
NSN 6110-01-527-8704
NSN 6150-01-423-2111
NSN 5910-00-221-3753
NSN 5920-00-170-9081
NSN 2925-01-053-0886
NSN 5835-01-324-0089
NSN 6610-01-487-8879
NSN 5990-01-584-6213
NSN 5910-01-550-2300
NSN 6645-01-092-4733
NSN 5998-01-492-6140