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 2925-01-129-1261
NSN 6685-00-492-1357
NSN 5855-01-450-8820
NSN 7035-01-543-6557
NSN 5965-01-469-0053
NSN 6240-00-409-8670
NSN 2925-01-552-4313
NSN 6610-00-632-6645
NSN 5960-01-443-3067
NSN 2925-01-448-2880
NSN 5930-01-472-3532
NSN 5855-01-100-3272