About: http://webisa.webdatacommons.org/433658669

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	Primarily the invention pertains to known types of seals to which fabric of low friction fibrous material is applied to the face which engages the moving part whether in rotation or reciprocation, or both.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com