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 5998-00-806-3608
NSN 5996-01-551-7433
NSN 5905-01-050-8992
NSN 5835-00-757-3558
NSN 5835-01-301-0022
NSN 5915-01-623-6787
NSN 6320-00-098-2858
NSN 2925-01-127-0167
NSN 6145-00-681-1585
NSN 5930-00-609-9342
NSN 5835-01-092-6759
NSN 6150-00-814-5905