About: http://webisa.webdatacommons.org/119230648

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	As shown in FIG. 4, there is a groove in the lower part of bore 47 and an O-ring 49 in the groove which provides a fluid tight seal between shaft 48 and the regulator body 44.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com