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 6220-01-526-2726
NSN 5999-00-518-4503
NSN 5905-00-844-9879
NSN 5925-01-492-3700
NSN 6320-01-399-6177
NSN 5910-01-351-4667
NSN 5985-00-409-4041
NSN 5855-01-556-7421
NSN 5835-00-711-3371
NSN 5910-01-633-9963
NSN 5999-01-445-0274
NSN 5945-00-300-6225