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 5965-01-550-2400
NSN 5835-01-540-4995
NSN 6650-01-152-3547
NSN 4140-01-534-5281
NSN 5930-01-038-2998
NSN 6105-01-624-0679
NSN 6620-01-411-2295
NSN 5920-00-907-3249
NSN 6130-01-362-1233
NSN 5835-00-060-9889
NSN 5935-01-100-8857
NSN 6130-01-088-5942