When the field of application and system requirements make high demands on leakage control and operational reliability, a redundant sealing system is necessary to
ensure reliable sealing of hydraulic cylinders at the piston rod. Sealing systems with elastomer-energized polymer seals are a proven answer to widely varying demands for standardized grooves, simple installation, resistance to media, high and low temperatures and pressures. The system offers enormous flexibility in the choice and
matching of materials.
The piston rod sealing system for hydraulic cylinders subject to heavy loads should consist of three elements:
The Turcon Stepseal 2K is used as primary seal. This seal element offers the back pumping property necessary for redundant rod seal systems as well as good resistance to high and low temperatures and high media resistance.
The Zurcon Rimseal was developed as the secondary seal in this system to ensure reliable sealing of thin oil films at low secondary pressures. A Zurcon material (polyurethane Shore D 58) is used combined with a new seal profile.
The contact pressure curve is automatically optimized under dynamic conditions.
The final outer element of the redundant sealing system is a double-acting scraper seal (e.g. DA 24, DA 22, DA 17, Turcon Excluder 2, Turcon Excluder 5). The optimum sealing system thus consists of three independent lip seals installed in line, whereby the hardness of the material decreases from the pressure side to the atmospheric side.
Advantages
- High static and dynamic leak tightness
- Low friction for reduced power loss
- High wear resistance for long service life
- Small groove
- Easy installation
- Optimum system element
- ISO/DIN grooves optional
- Available for any diameter from .040 inches (8 mm) to
86.500 inches (2,200 mm)
Application Examples
- Mobile hydraulics
- Standard cylinders
- Machine tools
- Injection molding machines
- Presses
Materials
The ZurconRimseal is made in the following material
combinations as standard:
Seal ring: ZurconZ52
Special polyurethane
58 Shore D
O—Ring: NBR. 70 Shore A
Set code: Z52N or Z52T
Series
The ZurconRimseal is a system seal and is preferably used
in tandem sealing systems in conjunction with the Turcon
Stepseal2K. The cross section series is identical with those
for the TurconStepseal2K.
ZURCONRIMSEALInstallation dimensions / TSS Part No.