| http://www.w3.org/ns/prov#value | - te), polyamides such as nylons, polyimides such as KAPTON???, and the like), preferably a low-friction polymeric material (e.g. fluorinated polymers such as poly(tetrafluoroethylene)) placed between them or by a coating of polymeric material applied to the plates, so that the plates may readily slide with respect to each other.
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