| http://www.w3.org/ns/prov#value | - In the exemplary embodiment of the present invention depicted in FIGS. 5a, 5 b, the inner member 78 and outer member 76 can be formed from polymeric materials such as latex, silicone, C-Flex, Tecoflex, polyurethane, polyethylene terephthalate (PET), polyethylene ethyl ketone (PEEK), polytetrafluorethylene (PTFE), nylon elastomer (PEBAX), and other materials known in the art.
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