Standard Double Acting Compact Piston Seals

Structural composition

1. Slide Ring

• Function: The sliding ring is the main part of the sealing element. It is in direct contact with the cylinder wall and is responsible for maintaining the seal when the piston moves.
• Material: Sliding rings are usually made of wear-resistant materials such as polytetrafluoroethylene (PTFE) or thermoplastic polyurethane (TPU) to ensure durability and sealing performance under high-pressure and high-temperature conditions.

2. Energizer

• Function: The activator is usually made of elastic materials, such as nitrile rubber (NBR) or polyamide (PA). Its main function is to deform during installation, thereby providing sufficient force to keep the sliding ring dynamic with the cylinder wall. Sealing contact.
• Design: The design of the activator ensures that under static conditions, the sliding ring can maintain good contact with the sealing housing groove to prevent leakage.

3. Anti-Extrusion Rings

• Function: Anti-extrusion rings are designed to prevent the sliding ring from being extruded or deformed under high-pressure conditions. They provide additional support to ensure the integrity of the sealing element.
• Location: The anti-extrusion ring is usually located between the sliding ring and the activator, or on the outside of the sealing element, to resist external pressure.

4. Seal Housing Groove

• Function: The seal housing groove is the location where the piston seal is installed. Its shape and size need to match the sealing element to ensure correct installation and sealing effect.
• Surface treatment: The surface roughness of the housing groove is critical to sealing performance and needs to be precisely defined to provide the best sealing effect.

5. Lubrication Film

• Function: Allows a thicker lubricating film to form between the double-acting piston seal and the cylinder wall, which helps reduce friction and wear and prolongs the service life of the sealing element.
• Conditions: Since double-acting pistons typically have the same fluid on both sides, the presence of this lubricating film is acceptable in most applications.

6. Adaptability design

• Compatibility: The design of some double-acting piston seals allows them to have the same housing dimensions as older O-rings, making it easy to swap from O-rings to piston seals without making major changes to existing systems.

Application scenarios

1. Construction machinery
In construction machinery such as excavators, loaders, bulldozers, graders, dump trucks, forklifts, loaders, etc., Standard Double Acting Compact Piston Seals are used to maintain the sealing of hydraulic cylinders to ensure efficient operation of the machinery and operational safety.

2. Agricultural machinery
Agricultural machinery, such as tractors, harvesters, planters, and other agricultural equipment, rely on these sealing elements to protect hydraulic systems from contamination and leakage, thereby increasing agricultural production efficiency.

3. Industrial machinery
In industrial machinery and automation equipment such as hydraulic presses, injection molding machines, stamping equipment, and other heavy machinery, Double Acting Compact Piston Seals are used to maintain the stability and reliability of hydraulic systems.

4. Automotive applications
In the automotive industry, these sealing elements are used in braking systems, suspension systems, power steering systems, and other hydraulic or pneumatic systems to improve vehicle performance and safety.

5. Mining equipment
In mining and excavation equipment such as scrapers, mining trucks, drilling equipment, and more, these sealing elements maintain the integrity of hydraulic systems in harsh underground environments.

product information

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