<http://webisa.webdatacommons.org/307995781>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/307995781>	<http://www.w3.org/ns/prov#value>	"The various seals 36, 38, 50, 53, 60, 93 and piston rings 76 and 96 preferably comprise an elastomeric material, and may alternatively comprise a variety of shapes, configurations, and materials, such as C-shaped seal rings, U-shaped seal rings, carbon-filled polytetraflouroethylene (PTFE), polyetheretherketone (PEEK), polyethersulfone (PES), heat-resistant thermoplastic, polyphenol sulfide (e.g.," .
<http://webisa.webdatacommons.org/prov/458623889>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/307995781> .
<http://webisa.webdatacommons.org/307995781>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .