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 6150-01-406-7389
NSN 6145-01-589-9721
NSN 6150-01-655-9566
NSN 2925-01-248-6028
NSN 6240-01-371-0978
NSN 5965-01-187-8574
NSN 6240-01-214-9458
NSN 6220-01-534-3965
NSN 5905-01-308-9691
NSN 5985-01-521-8410
NSN 5945-01-551-0654
NSN 5855-01-236-4497