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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Valve seat materials are made from elastomers such as Buna and Viton, plastics, Teflon, and metals such as stainless steel and brass.
http://www.w3.org/ns/prov#wasQuotedFrom	designnews.com