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 6320-00-194-4252
NSN 6610-00-107-1944
NSN 5835-01-580-0446
NSN 5990-01-514-8708
NSN 5905-01-396-8770
NSN 5985-01-462-0144
NSN 7035-01-578-0644
NSN 5985-01-659-4360
NSN 6220-01-598-5354
NSN 5950-01-004-8052
NSN 5960-01-544-1273
NSN 6105-00-622-1028