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 5855-01-312-5160
NSN 7035-01-387-0493
NSN 6105-01-073-0611
NSN 5945-00-024-9747
NSN 5985-01-086-7662
NSN 7035-01-411-6062
NSN 6650-00-973-9533
NSN 6240-01-487-3716
NSN 5985-01-541-4797
NSN 6135-00-112-8637
NSN 5990-00-607-9477
NSN 5996-01-106-2763