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 5985-00-895-1177
NSN 6130-00-943-1810
NSN 5905-01-448-3405
NSN 6110-01-029-6805
NSN 5855-01-537-1653
NSN 6685-01-374-7942
NSN 5999-01-613-5227
NSN 6135-00-284-0799
NSN 5945-00-628-5620
NSN 5999-01-540-7884
NSN 4140-01-310-8608
NSN 5915-01-485-3838