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 6220-01-053-2572
NSN 6105-01-028-2028
NSN 5935-01-401-5324
NSN 4140-00-106-0997
NSN 5925-01-073-4616
NSN 5945-01-502-2452
NSN 5950-01-071-9574
NSN 5835-01-548-7454
NSN 6620-01-333-7014
NSN 5915-01-365-2668
NSN 6105-00-714-0005
NSN 5910-01-128-6668