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 6135-01-014-3144
NSN 5855-00-560-0110
NSN 5925-00-003-4722
NSN 5835-01-176-5422
NSN 5960-00-450-5524
NSN 5950-01-229-4230
NSN 5935-01-310-6762
NSN 5915-00-159-7349
NSN 6135-01-392-6166
NSN 6145-00-248-4944
NSN 6135-00-906-0984
NSN 6110-01-463-9010