About: http://webisa.webdatacommons.org/415661930

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	Positioned within each recess or groove is a substantially wedge-shaped sealing element or packing 6 formed of a resilient material such as natural or synthetic rubber.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com