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 6240-01-142-0729
NSN 5965-00-324-2428
NSN 6240-01-079-9080
NSN 6105-01-215-2339
NSN 5945-00-681-0371
NSN 6130-01-522-4203
NSN 5905-01-487-4374
NSN 5998-00-542-9656
NSN 5990-01-046-3450
NSN 7035-00-433-5670
NSN 5965-01-551-9557
NSN 5930-00-537-0508