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 6105-01-458-3996
NSN 5996-01-242-9710
NSN 6650-01-203-8263
NSN 5985-00-833-9393
NSN 6645-01-562-7154
NSN 6135-00-660-8654
NSN 5998-01-558-2840
NSN 5945-01-498-2151
NSN 5996-00-823-4789
NSN 5960-00-127-5594
NSN 2925-01-588-3507
NSN 5920-01-447-2225