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 5960-01-307-2674
NSN 5925-00-925-2164
NSN 5985-01-244-9316
NSN 6150-00-050-0910
NSN 5950-01-427-3723
NSN 5935-00-227-1110
NSN 6320-01-301-4699
NSN 6130-01-113-2529
NSN 5996-01-058-5719
NSN 5920-01-377-0116
NSN 6220-00-541-8515
NSN 5985-01-428-3069