Seals

Stepped rings as single-acting, internally sealing rod stepped rings and as externally sealing piston stepped rings for any rod and piston diameter.

Fietz step rings are preferably used for sealing in stroke-like movements and have proven themselves 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. Step rings from Fietz are available in various material combinations, the properties of which are optimised for special areas of application.

    

Advantages of Fietz step 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