Coupling rings
You can obtain outer rings as internally sealing, double-acting rod outer rings and as externally sealing, double-acting piston outer rings for every rod and piston diameter as well as wipers.
Fietz O-rings are preferably used for sealing in stroke-shaped movements and have proven their worth especially in the hydraulic sector.
Depending on the choice of material, operating pressures up to max. 800 bar (80 MPa) - and even higher with static loads -, speeds up to max. 15 m/min. and temperatures between -54ºC and +200ºC can be achieved.
An application with rotating or helical movement is only possible to a limited extent. Fietz shell rings are available in various material combinations, the properties of which are optimised for special areas of application.
Advantages of the Fietz shell rings
- High abrasion resistance
- Excellent sliding properties
- No stick-slip effect
- Several times longer service life compared to conventional seals
- Universally applicable for almost all lubricating and non-lubricating media
- Optimised material combination for special applications
- One-piece piston and cylinder head possible
