Hydraulic Seals

The role of hydraulic seals
In fluid power systems, hydraulic seals are critical for preventing fluid leakage in machines. Common across automotive, construction, and agricultural industries, they ensure safe and efficient operation of hydraulic cylinders.

Guide rings for piston rods

Guide rings seal the piston against the cylinder wall and directly impact performance, precision, and longevity of the hydraulic system.

Gland hydraulic rings

Gland (packing) seals are exposed to continuous piston rod motion and abrasion. Robust and carefully selected, they are essential for safety in demanding conditions.

Guide rings

Self-lubricating guide rings with low wear are ideal for metal-to-metal sealing in both hydraulic and pneumatic cylinders, ensuring smooth and reliable operation.

Scraper rings

Scraper rings, equipped with a scraping lip, protect hydraulic systems by removing contaminants to prevent accelerated wear and cylinder damage.

Static hydraulic seals

Static seals, including O-rings and X-rings, are versatile sealing solutions used extensively in drives and control systems, suitable for dual-element assembly.

O‑rings

Typically made from NBR rubber, suitable for sealing static and dynamic hydraulic and pneumatic connections, with resistance to oils, greases, fuels, and operating temperatures from -30 °C to +110 °C at around 70° ShA hardness.

X‑rings / Quad‑rings

Also made from NBR, designed to handle mineral oils, petroleum-based fluids, hydraulic fluids (HFA, HFB), diluted acids/bases, at temperatures from -30 °C to +110 °C, with an X-shaped cross-section for improved sealing.

GDS / GDS‑OU rings

Constructed from polyurethane, GDS rings replace conventional O-rings in high-pressure applications up to 500 bar, operable from -35 °C to +110 °C. Ideal for both static and dynamic seals in presses, forklifts, and mobile machinery.