Patent Number: 6,168,164

Title: Hydrodynamic seal and method of manufacture

Abstract: A hydrodynamic shaft seal assembly and method of forming hydrodynamic grooves involves forming a spiraling open channel portion in the face of the seal element, and cutting a flex-enhancing portion extending from the open channel portion further into the seal element to enhance the flexibility of the seal without further enlarging the open channel portion.

Inventors: Toth; David M. (Brighton, MI), Smith; Stanley N. (Farmington, MI)

Assignee: Federal-Mogul World Wide, Inc.

International Classification: B23P 17/00 (20060101); F16J 15/32 (20060101); F16J 015/32 (); B23P 017/00 ()

Expiration Date: 01/02/2018