| CPC F16C 33/62 (2013.01) [B29C 43/203 (2013.01); F16J 9/26 (2013.01); B29K 2105/251 (2013.01); F16C 2208/32 (2013.01); F16C 2220/08 (2013.01); F16C 2220/20 (2013.01); F16C 2220/60 (2013.01); F16C 2360/42 (2013.01)] | 19 Claims |

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1. A machine component, comprising:
a body configured to couple with a moving shaft, the body comprising:
a first region comprising a first polymeric material;
a second region comprising a second polymeric material; and
two or more interfacial regions, wherein at least one of the interfacial regions defines a compositional gradient between the first region and the second region,
the first region, the second region and the at least one interfacial region extend to an exterior surface of the body, and
the at least one interfacial region is formed by compression molding the first polymeric material and the second polymeric material in a cylindrical mold to yield the machine component.
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