Finnegan, Henderson, Farabow, Garrett & Dunner
Seal assembly for stirling engine
 A Stirling engine seal assembly includes a seal ring body and an expander. The seal ring body consists of a matrix made of polytetrafluoroethylene compounded and filled with carbon fibers and at least one powder selected from the group consisting of carbon powder, boron nitride powder and molybdenum disulfide powder. The plate expander is in abutting contact with the inner peripheral surface of the seal ring body for urging the seal ring body in the direction of its outer circumference. 
Aisin Seiki Kabushiki Kaisha Kabushiki Kaisha Riken
Y F F Y Y F Y F
Y10S F02G F16J Y10S Y10S F02G Y10S F16J
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Tetsumi Koichiro Yoshiaki Hiroyuki Yutaka Tunesaku
Watanabe Kasahara Wada Katsuda Momose Itaba