The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2002
Filed:
May. 31, 2000
Takuya Ishii, Mie, JP;
Kenji Ito, Mie, JP;
NTN Corporation, Osaka, JP;
Abstract
A seal ring that is high in wear resistance and sealability, and less likely to damage an aluminum alloy mating member, and particularly a seal ring having an outer diameter of 20 mm or under and formed with a slit which can be opened easily to be fitted on a shaft. The seal ring is made from a lubricating resin composition containing 50-90 vol % of an aromatic polyether ketone resin, 5-30 vol % of an aromatic polyamide fiber, and 2-30 vol % of tetrafluoroethylene resin. The composition may further contain 2-20 vol % of mica or talc, or 2-30 vol % of a whisker having a Mohs hardness of 3 or over. The seal ring is formed with a slit and has an an outer diameter of 20 mm or under with a bending strain (under ASTM D790) of 3% or over.