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 5895-01-608-4784
NSN 5915-00-104-3119
NSN 6150-01-143-5972
NSN 2925-01-633-4048
NSN 5998-01-209-8684
NSN 5930-01-235-1363
NSN 5960-00-010-5300
NSN 5945-01-398-8294
NSN 6145-01-141-6809
NSN 6150-00-403-1942
NSN 5905-01-551-9678
NSN 5895-00-659-8434