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 6105-00-248-5772
NSN 6220-01-411-6796
NSN 5960-01-294-2397
NSN 4140-01-423-6219
NSN 5835-01-328-3566
NSN 5835-01-509-8992
NSN 2925-01-481-7170
NSN 6135-01-606-0596
NSN 5915-00-528-9286
NSN 6130-01-437-5576
NSN 5996-01-229-7434
NSN 6105-00-007-0424