Hydraulic systems are widely used in industrial machinery, construction equipment, manufacturing automation, and fluid power systems. In these applications, sealing components play a critical role in maintaining system pressure, preventing fluid leakage, and protecting internal components from external contaminants such as dust, dirt, and moisture.
Hydraulic seals must withstand demanding operating conditions including high pressure, temperature fluctuations, and continuous mechanical motion. Reliable sealing solutions ensure the stability, efficiency, and service life of hydraulic cylinders, pumps, valves, and actuators.
Properly designed sealing systems not only improve equipment reliability but also reduce maintenance costs and downtime in hydraulic equipment.
Sealing Products and Services Provided by FOLON.A
FOLON.A provides a wide range of sealing products designed for hydraulic applications across various industries. Our solutions are widely used in hydraulic cylinders, pumps, valves, pipe fittings, and other fluid power equipment.
Our hydraulic sealing product range includes:
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O-Rings
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Back-Up Rings
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PTFE Seals
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Hydraulic Piston Seals
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Rod Seals
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Guide Rings and Wear Rings
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Rotary Oil Seals
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Bonded Seals
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Custom Rubber Sealing Components
In addition to standard products, FOLON.A also provides custom sealing solutions based on customer drawings or samples. Our engineering team supports customers in selecting suitable materials, optimizing sealing structures, and improving product performance in demanding hydraulic environments.
With strong manufacturing capabilities and large inventory, we are able to support both prototype development and large-volume production.
Common Materials and Certification Requirements
Hydraulic sealing components require materials that offer excellent resistance to hydraulic fluids, pressure, and mechanical wear. FOLON.A provides sealing products manufactured from a wide range of high-performance elastomers and engineering plastics.
Common materials used in hydraulic sealing applications include:
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NBR (Nitrile Rubber) – widely used for mineral oil based hydraulic systems
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HNBR (Hydrogenated Nitrile Rubber) – improved heat and wear resistance
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FKM (Fluorocarbon Rubber) – excellent chemical and temperature resistance
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PTFE (Polytetrafluoroethylene) – low friction and outstanding chemical stability
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PU (Polyurethane) – high wear resistance for dynamic sealing
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EPDM – suitable for water-based hydraulic fluids
To ensure consistent product quality and reliability, FOLON.A operates under strict quality management systems and can provide complete material reports and quality documentation for customer verification.
Our certifications include:
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ISO 9001 – Quality Management System
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IATF 16949 – Automotive Quality Management Standard
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GB/T 14001 – Environmental Management System
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GB/T 45001 – Occupational Health and Safety Management System
Additional certifications and documentation can also be provided according to customer or industry requirements.
Special Requirements for Hydraulic Seals and Manufacturing
Hydraulic sealing products must meet strict technical requirements to ensure reliable performance under high-pressure operating conditions.
Key requirements for hydraulic seals include:
High Pressure Resistance
Hydraulic systems often operate under pressures ranging from several MPa to over 40 MPa. Sealing components must maintain structural stability and prevent extrusion or deformation under pressure.
Low Friction and Wear Resistance
Dynamic sealing applications such as hydraulic cylinders require materials and surface finishes that minimize friction and wear to extend service life.
Dimensional Accuracy and Surface Quality
Precision manufacturing and strict dimensional control are essential to ensure proper sealing performance and compatibility with hydraulic equipment.
Compatibility with Hydraulic Fluids
Sealing materials must resist swelling, degradation, or chemical attack from hydraulic oils and other working fluids.
FOLON.A utilizes advanced manufacturing technologies including precision molding, CNC machining, PTFE processing, and strict quality inspection procedures to ensure all hydraulic sealing products meet demanding industrial standards.
Advantages of FOLON.A
FOLON.A combines manufacturing expertise, engineering knowledge, and global supply capability to provide reliable sealing solutions for hydraulic systems.
Our key advantages include:
Extensive Product Range
A comprehensive portfolio of sealing products suitable for various hydraulic applications.
Material Expertise
Wide selection of elastomers and engineering plastics designed for demanding hydraulic environments.
Custom Manufacturing Capability
Support for non-standard sealing components based on drawings, samples, or specific application requirements.
Strict Quality Management
Certified quality systems and complete traceability of materials and production processes.
Fast Response and Global Supply
Large inventory and efficient logistics ensure quick delivery to customers worldwide.
Through continuous innovation and strict quality control, FOLON.A is committed to providing high-performance sealing solutions that enhance the reliability and efficiency of hydraulic systems.
FAQ – Hydraulic Sealing Solutions
What seals are commonly used in hydraulic systems?
The most commonly used seals in hydraulic systems include O-rings, piston seals, rod seals, guide rings, and back-up rings. These components work together to prevent leakage and maintain system pressure.
What materials are best for hydraulic seals?
Common materials for hydraulic seals include NBR, HNBR, FKM, PTFE, and polyurethane (PU). The correct material depends on operating pressure, temperature, and hydraulic fluid compatibility.
Why are back-up rings used with O-rings in hydraulic systems?
Back-up rings are used to prevent O-ring extrusion when hydraulic systems operate under high pressure. They improve sealing reliability and extend the service life of O-rings.
Can hydraulic seals be customized for specific equipment?
Yes. Many hydraulic sealing components can be custom manufactured based on drawings or samples. Customization may include material selection, dimension adjustment, and special sealing designs.
How do I choose the correct hydraulic seal?
Choosing the correct hydraulic seal requires considering several factors including:
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operating pressure
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working temperature
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hydraulic fluid type
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motion type (static or dynamic)
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installation space
Professional engineering support can help ensure the correct sealing solution for your application.