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 5998-01-107-7624
NSN 5895-01-189-9481
NSN 6610-00-180-9062
NSN 7035-01-381-5411
NSN 5930-01-612-2501
NSN 6220-01-608-4497
NSN 5895-00-120-1195
NSN 5998-01-381-9577
NSN 6110-00-932-1590
NSN 5999-01-037-1735
NSN 5920-00-629-0442
NSN 5945-00-099-9857