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 5835-01-125-6676
NSN 6145-00-209-5657
NSN 6650-00-563-3880
NSN 6220-01-547-0271
NSN 2925-00-124-5465
NSN 5935-00-112-5194
NSN 5910-00-168-3466
NSN 5930-00-552-8190
NSN 5950-01-583-3026
NSN 6610-00-562-9174
NSN 6135-01-514-9327
NSN 6105-01-519-3558