| prov:value
| - Examples of such materials are rubber, plastic, polyethylene, polyurethane, silicone, Gortex (polytetrafluoroethylene), Dacron (polyethylene tetraphthalate), polyvinyl chloride, Teflon (polytetrafluoroethylene), latex, elastomers, nylon and Dacron sealed with gelatin, collagen or albumin.
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