About: http://webisa.webdatacommons.org/52522135

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	The discs 100 and 106 have slits, as previously described, in order to seal against the catheter, and in the embodiments of FIGS. 7 and 8, the discs may be constructed from a suitable elastic material, such as silicone or natural rubber.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com