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 6320-00-831-2227
NSN 5855-00-491-7079
NSN 5996-00-186-6186
NSN 6645-01-044-6376
NSN 6150-01-592-3593
NSN 5930-00-333-9236
NSN 6130-01-290-5468
NSN 5998-01-104-5293
NSN 5985-01-422-7045
NSN 5965-01-425-5857
NSN 6610-00-824-8616
NSN 5996-01-134-7638