John Crane Inc.

Michael G Kalodimos

James R Wasser

Darin Merrill Rasmussen

Syed Niamathullah

Tom Steigerwald

Dan Kozlowski

Douglas J Volden

Thomas Steigerwald

A non-collapsible flexible sealing membrane (or bellows) for incorporation in a mechanical seal assembly and use in rotary shaft equipment. The sealing membrane includes a substantially radially outward extending first flange portion, which can be urged into an axially shiftable ring by a biasing mechanism. The sealing membrane further includes a substantially axially outboard extending second coaxial portion, substantially radially inward of the balance diameter of the seal. The horizontal portion is advantageously held fixed to a stub sleeve by an annular band. The angle between the vertical portion and the horizontal portion of sealing membrane enables directional control of the forces acting on stub sleeve and primary ring.

Non-collapsible flexible sealing membrane and seal assembly for rotary shaft equipment

A mechanical end face seal with a pair of annular relatively rotating seal face defining seal rings. An annular compression contact ring disposed in surrounding relation to one of the seal rings includes a plurality of pads at asymmetrical locations in interference contact with the outer cylindrical surface of the ring.

Mechanical seal with banded ring

Growing community of inventors

Morton Grove, IL, United States of America

Michael G Kalodimos