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 5925-00-283-1400
NSN 6685-00-399-3250
NSN 6130-00-981-5575
NSN 5990-00-336-2054
NSN 6220-01-486-9591
NSN 5960-00-049-7712
NSN 7035-00-142-9076
NSN 7035-00-585-2113
NSN 5920-01-432-1328
NSN 6685-01-457-7980
NSN 5950-01-521-7053
NSN 5930-01-340-4586