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 5985-01-420-0944
NSN 6650-00-084-4258
NSN 5855-00-902-3069
NSN 5930-00-996-3776
NSN 2925-01-544-4880
NSN 5996-01-474-9412
NSN 6130-00-475-0336
NSN 5998-00-517-9170
NSN 5996-01-388-5911
NSN 5990-01-287-9447
NSN 6240-00-753-2031
NSN 5945-01-187-2075