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 5855-01-328-7434
NSN 5920-00-527-9473
NSN 6135-00-833-9909
NSN 5996-01-585-2226
NSN 5960-01-370-4285
NSN 5960-01-449-5726
NSN 6620-00-912-9623
NSN 6105-01-240-3780
NSN 5990-01-331-2221
NSN 5945-00-953-4142
NSN 5965-01-420-6613
NSN 6150-01-052-4056