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 7035-00-281-4082
NSN 6240-01-037-1273
NSN 5835-01-071-9310
NSN 6320-01-425-1417
NSN 5996-01-435-5547
NSN 5996-01-371-2958
NSN 5910-01-641-2902
NSN 7035-01-423-8343
NSN 5925-00-454-6870
NSN 7035-00-360-2008
NSN 5855-01-268-6468
NSN 5835-00-356-3825