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 6240-01-370-3896
NSN 5915-00-223-5308
NSN 6110-01-463-9010
NSN 5855-00-118-8762
NSN 6240-00-758-3367
NSN 5996-00-153-3216
NSN 5905-01-343-3585
NSN 5920-01-431-0429
NSN 6620-01-222-3143
NSN 5950-01-194-9880
NSN 5905-01-170-4111
NSN 5905-01-141-6628