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 5945-00-259-3563
NSN 6105-01-656-8882
NSN 5945-01-227-6922
NSN 5950-01-264-5365
NSN 6135-00-209-6918
NSN 6610-01-207-0045
NSN 5965-00-682-3567
NSN 6105-01-162-2976
NSN 6150-01-197-5728
NSN 5975-01-055-6206
NSN 6220-01-310-0212
NSN 5945-01-556-3304