Universal Shaft Seal
The High Performance Shaft Seal
Constructional Features
Universal shaft seal rings are produced without metal housing and do basically consist of three elements:
- fabric-reinforced Elastomer to secure the seal rings against the casing bore.
- seal lips made from a homogeneous Elastomermixture with addition of PTFE (minor friction!)
- stainless steel garter spring
Application
Universal shaft seal rings are generally used in the engine construction, however, mainly with heavy equipment and shipbuilding (e.g. rolling mill, power transmission, propeller shaft, water turbine etc.).
In addition to the above, they are used where shaft seal rings in a metal housing may not be applied.
Universal shaft seal ringsare available in various types, in split and endless version.
Technical Data
Peripheral speed
With optimum operating conditions the universal shaft seal ring T51 can be used for peripheral speeds of max. 25 m/s. As for type T61, the allowed peripheral speed depends on the pressure load (Please see diagram).
Hardness of seal surface
Depending on the operating conditions 40 – 45 HRC.
Run-out and misalignment
Because of their construction, the universal shaft seals are able to accept high rotation and concentric deviations in the radial direction. The diameter and the peripheral speed are the decisive parameters.
The data and recommendations of this brochure represent our up-to-date knowledge and experience. Since there is a wide variety of possible applications, these data can merely be considered as a guidance. Warranty claims cannot be deduced thereof.
Pressure
The universal shaft seals T51 and T53 are only used in applications without pressure load. With pressure differences, type T52 can be used according to DIN 3769 depending on the rotating speed and peripheral speed (max. 0.5 bar).
Quality of seal surface
Special Versions
with dust lip
grooves and circular groove
Materials
Dimensions available
Installation dimensions
and tolerances
