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 6220-01-272-5872
NSN 5895-01-510-7482
NSN 6645-01-076-4655
NSN 5915-01-500-8765
NSN 5999-01-352-4860
NSN 5920-01-608-4166
NSN 5915-00-406-6460
NSN 5835-01-131-2027
NSN 6620-01-361-7775
NSN 5950-01-473-2973
NSN 6610-01-395-7441
NSN 5910-00-007-9337