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 6105-01-163-2943
NSN 6150-01-049-3437
NSN 6320-01-192-0332
NSN 5996-00-581-5810
NSN 5935-01-442-6483
NSN 5925-01-401-5314
NSN 5998-00-297-9036
NSN 5925-01-562-4897
NSN 5910-01-045-4223
NSN 6130-01-258-0354
NSN 5835-01-191-3405
NSN 5930-01-567-9664