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 6320-01-512-2031
NSN 5935-01-551-2049
NSN 6150-00-856-6995
NSN 6610-00-428-3678
NSN 5925-01-645-4119
NSN 5945-00-850-1977
NSN 5999-01-253-7717
NSN 5915-01-464-8685
NSN 6135-00-221-4720
NSN 5920-00-271-3217
NSN 5835-00-143-4153
NSN 6110-01-652-8267