About: http://webisa.webdatacommons.org/446342582

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	Various elastomeric materials may be used for the cushion and for the seals, such as rubber, polyurethane or the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com