About: http://webisa.webdatacommons.org/314677542

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	At least one seal is preferably provided to prevent liquids and other elements from entering the chamber.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com