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 6110-01-508-4312
NSN 5920-01-430-2530
NSN 6650-01-381-7172
NSN 6610-01-003-9763
NSN 5920-00-110-9415
NSN 5960-00-766-6042
NSN 6105-00-233-7312
NSN 6145-01-522-4029
NSN 5950-00-838-5146
NSN 7035-00-553-6951
NSN 5998-00-467-7276
NSN 5945-00-736-8474