Reference manual no. 37013-250
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 5945-00-202-0792
NSN 6610-00-273-3016
NSN 5945-00-891-4071
NSN 6610-00-223-4519
NSN 5945-01-357-1026
NSN 6650-01-399-8552
NSN 6320-01-006-6138
NSN 2925-01-604-8984
NSN 6145-00-466-4068
NSN 5998-00-234-9472
NSN 5999-00-248-5814
NSN 6320-01-525-4789