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 6650-01-590-3670
NSN 5960-01-380-0885
NSN 6685-01-483-1285
NSN 6150-01-389-7670
NSN 6110-01-310-8476
NSN 5925-01-359-1679
NSN 5998-00-256-4426
NSN 5950-01-250-9429
NSN 6620-00-458-8266
NSN 6610-01-015-9798
NSN 5930-00-373-3870
NSN 5999-01-504-6246