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 5920-00-929-4976
NSN 6105-01-392-9066
NSN 5985-00-318-7879
NSN 5975-01-440-9080
NSN 6130-01-367-0782
NSN 6110-01-304-4247
NSN 5999-01-431-5815
NSN 6110-01-646-9245
NSN 6220-01-524-0285
NSN 7035-00-455-7666
NSN 4140-00-225-8586
NSN 5920-01-246-5678