About: http://webisa.webdatacommons.org/374277755

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	Alternatively, the sealing ring may be formed from a hard material such as plastics, metal, ceramic or other materials in order to provide a seal when pressed against the user's skin.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es