User-friendly carbon floating ring seal

User-friendly carbon floating ring seal

With the WD200/500 series, EagleBurgmann Espey introduced a carbon floating ring seal which can be installed in nearly all machine types with rotating shaft. The WD200/500 is very user-friendly thanks to its divided housing and segmented seal rings. Seal assembly or seal ring replacement occurs without having to first dismantle machine parts, such as the motor or gears. The Espey WD200 is fitted on the process or product side. The seal ring has a precisely calculated gap to the shaft that enables a defined buffer gas flow into the process compartment. This securely prevents process gas from escaping into the atmosphere. The Espey WD500 seal ring type is fitted to the atmosphere side. The seal rings with overlapping mortised joints slide on the shaft and are self-adjusting. This reduces the radial gap to the shaft. The volume of leakage as well as the consumed buffer gas to the outside is very low.

The seal components are not mounted on the shaft which helps prevent additional shaft vibrations. A short axial installation length provides the customer with potential savings in the designing of his machine and also prevents vibrations.