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 5965-00-113-9748
NSN 5855-00-560-0110
NSN 5950-01-448-9779
NSN 6320-01-498-4954
NSN 6650-01-567-1933
NSN 6320-00-857-4073
NSN 7035-01-595-5270
NSN 5960-01-089-8155
NSN 6135-01-407-0594
NSN 5999-00-284-8403
NSN 6320-01-516-3836
NSN 6610-00-540-8911