摘要 |
A ring seal comprising a main body member having a U-shape cup recess opening on one side, usually having a U-shape metal spring located therein, and a hat ring with a solid projection fitting into the U-shape cup recess opening and having its opposite face being flat and normal to the ring axis. A back up ring adjacent the heel of the main body ring can be provided. An assembly of such ring seals can be stacked heel-to-heel; hat-ring-to-hat-ring or heel-to-hat-ring.
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