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 6685-01-441-2616
NSN 5915-00-968-7515
NSN 6145-01-401-3713
NSN 5985-00-304-8628
NSN 6685-01-575-4280
NSN 5998-01-109-9381
NSN 6645-01-497-1998
NSN 5945-00-844-0771
NSN 6610-00-832-3137
NSN 6110-01-268-1723
NSN 5965-01-558-8863
NSN 6105-00-450-6053