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 6105-01-148-1679
NSN 5835-01-178-4154
NSN 5998-01-634-0604
NSN 5930-01-105-9876
NSN 5950-00-246-6362
NSN 2925-00-969-8340
NSN 6685-00-813-9653
NSN 5930-01-051-2227
NSN 6610-00-186-9180
NSN 6105-01-618-8998
NSN 6150-01-025-1299
NSN 5996-01-414-4317