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 5945-01-294-3086
NSN 6610-01-397-4607
NSN 6610-01-189-3001
NSN 5998-01-140-8005
NSN 5930-01-519-4625
NSN 5950-00-914-2822
NSN 6130-01-007-4611
NSN 5975-01-550-7390
NSN 5985-01-493-2398
NSN 5920-00-679-7852
NSN 6145-00-141-8095
NSN 5990-01-380-7815