Air Products and Chemicals, Inc.

Xiang Lu Kong

Bowie G Keefer

Alan O Lebeck

Christopher R Mclean

Michael J Mckerrow

Michel P Leblanc

Bowie Gordon Keefer

Christopher R McLean

Alan Otto Lebeck

Michael Jamie McKerrow

Michel P LeBlanc

A typical rotary face seal employs a seal ring rotating relative to a sealing surface and also employs means to urge the seal ring towards the sealing surface in order to effect a seal. The seal ring may itself comprise a seal face bonded to a backing ring. In certain applications, the seal face may deform significantly as a result of the temperature variations experienced and an undesirable crowning of the seal face may occur. Such crowning may be reduced by employing an improved seal ring with anti-crowning features in which the thickness of an edge of the seal face is different from that in the middle of the seal face, or in which a relief slot is employed in the seal face. The improved seal ring is particularly suited for rotary face seals used in a rotary valve in a rotary gas separation device.

Rotary face seal with anti-crowning features

Growing community of inventors

Calgary, Canada

Xiang Lu Kong