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 5985-00-170-6768
NSN 5935-01-154-4705
NSN 5965-00-478-3442
NSN 6110-01-360-3487
NSN 5835-01-080-7784
NSN 5998-00-280-7270
NSN 6220-01-162-3293
NSN 5985-00-658-2879
NSN 5950-01-542-3271
NSN 5985-00-604-8557
NSN 5935-01-393-8789
NSN 6620-01-423-7300