Dalatec integrates Trelleborg Sealing Solutions in many of their hydraulic and pneumatic applications.

We find Trelleborg to offer the finest quality "one –stop ship providing the best in elastomer, thermoplastic, PTFE and composite technologies..."

Trelleborg Sealing Solutions is a leading worldwide supplier, developer and manufacturer of industrial seals, including O-Rings, Hydraulic and Pneumatic Seals, Mechanical Face Seals and Rotary and Static Sealing Systems.

Trelleborg Sealing Solutions is a major international sealing force, uniquely placed to offer dedicated design and development from its market-leading product and material portfolio: a one-stop-shop providing the best in elastomer, thermoplastic, PTFE and composite technologies for applications in aerospacem industrial and automotive industries.

With 50 years of experience, Trelleborg Sealing Solutions engineers support customers with design, prototyping, production, test and installation using state-of-the-art design tools. An international network of over 70 facilities worldwide includes 30 manufacturing sites, strategically-positioned research and development centers, including materials and development laboratories and locations specializing in design and applications.

In our growing and extensive business supporting, hydraulic, pneumatics and motion control, having an appropriate seal is paramount.

Here are some of examples:

Wind Turbines


Wind Power Engineering - Trelleborg Sealing Solutions

Winds of change: Trelleborg Sealing Solutions solves the sealing challenge within wind turbine actuators

Trelleborg Sealing Solutions supplies a specially engineered sealing configuration to AVN Energy A/S, a leading hydraulic actuator manufacturer for wind turbines. Meeting the dynamic criteria due to constant movement of the actuator, the sealing system offers maximized seal life, contributing to minimal turbine maintenance requirements.

Stall machine turbines being replaced by continuous pitch systems has put extreme demands on hydraulic actuators. The position of stall machines would shift only once every ten minutes but in continuous pitch wind turbine systems, the nacelle and angles of the blades constantly change in small amounts once every rotation, on average 15 times per minute. This means that instead of producing six long strokes per hour, the turbines hydraulic actuator must now initiate nine hundred short strokes in the same period, 24 hours a day, seven days a week, for a targeted 20-year period.

The seals within the hydraulic actuators are integral to its performance, and optimizing seal life is critical to the long‐term effectiveness of the total system. Seals must operate at 250 bars/ 3625 psi with constant pressure on the rod from behind and differential side loads that control positioning. Wear has to be minimized and dynamic movement that is continuous in short strokes needs to be facilitated. Temperature resistance is required down to -30°C/-22°F as standard and to -40°C/-40°F in the Artic, with maximum temperature capability of 60°C/140°F.

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