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 6130-01-400-6123
NSN 5905-00-666-1597
NSN 5835-00-827-1904
NSN 5905-01-439-5832
NSN 5905-01-144-0434
NSN 5950-00-383-5811
NSN 5855-01-180-5369
NSN 5965-01-519-1929
NSN 5985-01-423-6277
NSN 7035-01-578-5403
NSN 6130-01-564-0580
NSN 6130-00-242-1465