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 5985-00-113-3417
NSN 5910-00-932-5344
NSN 6685-00-095-8279
NSN 6620-01-278-4202
NSN 6240-01-202-5649
NSN 5950-01-563-3890
NSN 5996-01-008-4456
NSN 6105-01-097-0777
NSN 6320-01-607-0347
NSN 5960-01-238-5046
NSN 5985-01-434-3864
NSN 6610-01-541-0880