| http://www.w3.org/ns/prov#value | - For example, in order to produce the elastic sheath 40, slits 20 can be made in polymer tubes composed of any of a variety of materials, such as silicone, polyurethane, silicone-polyurethane copolymer, styrene-ethylene-butylene-styrene (copolymer), and other suitable elastomeric materials.
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