| http://www.w3.org/ns/prov#value | - For example, in certain embodiments, the resilient material 16 may be constructed of a material such as silicone, Vamac, polysulfide, Neoprene, Hypalon, butyl, Teflon, millable or cast polyurethane, rubber, fluorosilicone, epichlorohydrin, nitrile, styrene butadiene, Kalrez, fluorocarbon, Chemraz, Aflas, other polymers, and the like.
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