Industrial Seals: Reliable Solutions for Leak-Free Hydraulics

The Critical Role of Seals in Hydraulic Systems

In the world of hydraulic and pneumatic systems, seals are the unseen yet indispensable heroes. These precision components are responsible for the efficiency, reliability, and service life of the systems. Their main tasks are to prevent leakage, maintain pressure, and protect the internal elements of the system from external contaminants. The "Industrial Seals" category at Hidraulika Store offers a comprehensive range of several thousand products, ensuring you can find the perfect piston seal, rod seal, O-ring, or wiper for any application.

Dynamic Seals: Protecting Components in Motion

Where there is movement, seals face the greatest challenges. In hydraulic cylinders, these components ensure that force is applied where it's needed, without leakage.

Rod Seals: Preventing External Leakage

The rod seal is located along the piston rod within the rod guide and prevents hydraulic oil from escaping the cylinder. This is one of the most critical sealing points. Selecting the right material and profile is essential for durable operation. Polyurethane (PU) seals, such as the S17 type, offer excellent wear resistance and mechanical properties. An outstanding example is the popular Rod Seal (S17) - 055×070×10/9 - PU, which is one of our best-selling products due to its reliability. Discover our full range of rod seals, where you can choose from hundreds of sizes and types!

Piston Seals: For Efficient Force Generation

The piston seal is located on the piston inside the cylinder. Its function is to separate the two pressure chambers, preventing internal oil bypass. This ensures that the pressurized oil acts on the piston with its full force, guaranteeing maximum power output. Our selection includes single-component and multi-component piston seals (e.g., K17/P55, K8).

Wipers (Scrapers): The System's First Line of Defense

The wiper is located on the outermost part of the rod guide. Its job is to clean dirt, mud, and other contaminants from the retracting piston rod. This protects the sensitive inner rod seals and the hydraulic oil from abrasive particles, significantly increasing the cylinder's service life.

Static and General-Purpose Seals: The Secure Points

Not only moving parts need sealing. Leak-free connections are also essential at fittings and between fixed components.

• O-Rings and Seal Cords: The most versatile and common type of seal. We offer them in thousands of sizes, in both metric and imperial standards, and in various materials (NBR70, NBR90, FPM/Viton, EPDM). For custom sizes, we provide seal cords.

• Washers: For hydraulic fittings, leak-free sealing is ensured by bonded washers or high-temperature resistant copper washers.

Guide and Specialized Elements: Supporting the System

• Guide Rings and Guide Tapes: These elements prevent metal-to-metal contact between the piston and the cylinder tube, or the piston rod and the rod guide. They absorb side loads, provide precise guidance, and extend the life of the seals.

• Rotary Shaft Seals (Oil Seals): Special components used to seal rotating shafts (e.g., in pumps, motors).

Why Choose Seals from Hidraulika Store?

With over 4000 different seals in stock, we guarantee you'll find the part you need. Our expert team can help identify old, worn seals and recommend the appropriate material and profile. Our goal is to provide not just a product, but a reliable, long-term solution to your leakage problems. Discover our full range of services on the hidraulikastore.com homepage.

Frequently Asked Questions

• What is the difference between an NBR and an FPM (Viton) O-ring? NBR (Nitrile Butadiene Rubber) is the most common, general-purpose material, excellent for resistance to mineral oils and greases between approx. -30°C and +100°C. FPM (Fluoroelastomer, commonly known as Viton®) is a premium material that can be used in a wider temperature range (-20°C to +200°C) and has better resistance to chemicals, fuels, and synthetic oils.

• How do I correctly measure a seal? For a rod seal, you need to measure the inner diameter (which is the rod diameter), the outer diameter (the groove diameter), and the height. For an O-ring, you need the inner diameter and the cord thickness (cross-section). Use calipers for accurate measurements.

• What should I do if I can't find the exact size or type? In this case, please contact us! It often happens that the dimensions of a worn seal are no longer standard. Our experts can help you find the closest replacement or an alternative solution based on the dimensions and application.