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 6145-00-947-2770
NSN 6110-00-412-4624
NSN 5915-00-223-5308
NSN 6620-00-038-5343
NSN 5985-01-145-5337
NSN 5905-00-271-8523
NSN 6135-00-009-4100
NSN 6320-01-558-8844
NSN 2925-01-448-2880
NSN 6105-00-075-2487
NSN 7035-00-549-2722
NSN 5998-01-442-0302