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 6110-00-838-0492
NSN 6650-01-411-6292
NSN 6135-01-559-1578
NSN 4140-00-225-8586
NSN 6320-01-346-5158
NSN 5910-01-650-0017
NSN 5985-00-141-5971
NSN 6105-01-130-0821
NSN 6240-01-384-4868
NSN 6240-00-082-1142
NSN 5930-01-397-2172
NSN 6110-01-620-8034