Radial Clearance Seal

Burgmanndirectional, gas lubricated CSR radial clearance seal is suitable for installation in all gas-conveying machines such as gas turbines, compressors, turbo chargers and turbo pumps. This aerodynamic seal consists of a split carbon graphite restricting ring that is held together by a tension spring around its circumference. Pockets are worked into the inner surface of the ring to generate a radial lifting force under operating conditions. A concentric gap thus forms automatically as the seal lifts off the shaft. The gap is small enough to keep leakage to a minimum. This achieves excellent static sealing at standstill because the seal and the shaft are then in contact. Other features include:

•Easy to install because of cartridge design
•High sliding velocities
•Temperature independent operation
•Good emergency running properties

<%=company%>, Dichtungswerke GmbH & Co., Postfach 1240, D-82502 Wolfratshausen, Germany. Tel: +49-8171-231453; Fax: +49-8171-231095