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 5998-01-438-9886
NSN 5950-01-338-5476
NSN 5996-01-528-7850
NSN 6145-01-458-0972
NSN 6685-01-476-4451
NSN 4140-01-099-6657
NSN 5975-00-964-6673
NSN 6150-00-877-3954
NSN 5960-01-535-1743
NSN 6320-01-585-8468
NSN 6130-01-422-4258
NSN 5996-01-391-4529