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 5965-01-288-0721
NSN 6130-01-598-4637
NSN 5998-00-451-9934
NSN 5945-01-082-7104
NSN 5920-01-182-7425
NSN 5960-00-244-8044
NSN 5905-00-384-0449
NSN 5925-01-128-4374
NSN 5985-01-373-9497
NSN 5996-01-545-5216
NSN 6645-01-468-4990
NSN 5999-00-334-0136