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 6645-01-371-0563
NSN 5930-01-153-7394
NSN 5950-01-135-5365
NSN 6240-01-295-8262
NSN 6240-01-133-1723
NSN 6650-01-181-6037
NSN 6645-01-202-7986
NSN 5920-01-366-8127
NSN 6105-01-655-6488
NSN 5835-00-060-9889
NSN 5905-00-789-4820
NSN 5915-00-478-5966