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 5835-01-370-4292
NSN 6645-01-249-7209
NSN 6320-01-562-1599
NSN 6135-00-643-4843
NSN 5975-01-423-8910
NSN 2925-01-411-8002
NSN 5855-01-277-1663
NSN 5950-01-527-7046
NSN 6610-00-011-9991
NSN 5945-01-469-5917
NSN 5985-01-314-6589
NSN 5835-01-642-4705