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 6130-00-419-1120
NSN 6110-00-596-9124
NSN 5835-01-264-8782
NSN 5920-01-535-0796
NSN 5950-00-597-8644
NSN 5930-01-264-3567
NSN 5945-00-105-3658
NSN 5998-01-486-9689
NSN 6320-00-857-4073
NSN 5925-01-028-0806
NSN 5925-01-089-9791
NSN 6220-00-420-1245