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 5999-00-332-9198
NSN 6110-01-646-4195
NSN 5975-01-070-4585
NSN 5945-00-601-6235
NSN 6320-01-506-9439
NSN 5996-01-392-4659
NSN 5920-01-462-0055
NSN 5930-01-592-6435
NSN 5950-00-150-4772
NSN 5895-01-088-8369
NSN 5998-01-449-1398
NSN 6130-01-657-4437