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 5950-01-093-6015
NSN 5990-01-242-9653
NSN 6145-01-614-5652
NSN 5990-01-625-0855
NSN 7035-00-946-2642
NSN 5950-01-570-0426
NSN 6150-00-222-5302
NSN 5835-01-561-2959
NSN 6320-00-937-5625
NSN 5975-00-912-3663
NSN 5999-01-293-8232
NSN 7035-01-581-8856