| http://www.w3.org/ns/prov#value | - Examples of such materials are rubber, plastic, polyethylene, polyurethane, silicone, Cortex (polytetrafluoroethylene), Dacron (polyethylene tetraphthalate), Teflon (polytetrafluoroethylene), latex, elastomers and Dacron sealed with gelatin, collagen or albumin.
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