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 6150-01-476-0555
NSN 5975-00-493-3614
NSN 5965-01-391-9492
NSN 6110-01-539-8760
NSN 5985-00-137-4328
NSN 5998-00-216-9646
NSN 5835-00-794-7500
NSN 5998-00-010-7995
NSN 6110-00-918-4738
NSN 6610-01-142-8958
NSN 5935-00-532-2399
NSN 5935-01-491-3714