Introduce

Double acting piston seal is a rubber seal used in double acting hydraulic cylinders. In industry, a double-acting hydraulic cylinder is a popular hydraulic actuator that may apply force or create motion in both directions. They are typically made up of a piston and a piston rod. To avoid hydraulic oil leakage and maintain pressure stability in a double-acting hydraulic cylinder, the piston must be sealed in both directions. Such seals are required for this.

Technical data

Material  EPDM
Density  0.85 – 1.30 g/cm³
Hardness  40 – 90 Shore A
Thermal conductivity  0.2 – 0.3 W/(m·K)
Friction coefficient  0.50 – 0.70

Certification standard

  • ISO 9001: The International Organization for Standardization (ISO) developed ISO 9001, a quality management system certification standard. Manufacturers who satisfy ISO 9001 criteria indicate that they have a comprehensive quality management system that includes design, production, testing, and delivery processes.
  • ASTM D2000/DIN 7715: These are rubber seal material requirements that specify the performance and characteristics of rubber materials such as hardness, tensile strength, tear strength, abrasion resistance, and so on.
  • REACH and RoHS: REACH and RoHS are EU rules that limit the use of chemical and hazardous compounds. If seals are exported to the EU market, they may be required to meet REACH and RoHS criteria.
Advantage
  1. Excellent sealing performance: The design of double acting piston seal can provide excellent sealing performance and effectively prevent hydraulic oil leakage. They can maintain the sealing effect under high pressure and high temperature conditions, ensuring the stable operation of the hydraulic system.
  2. Wear-resistant and durable: Double acting piston seals are made of rubber materials with strong wear resistance and high durability. They can withstand frequent reciprocating movements in high-pressure environments and have a long service life.
  3. Widely adaptable: It can be customized according to the needs of different applications. After corresponding design, they are suitable for various industrial fields, including machinery and equipment, automobiles, aerospace, construction engineering, etc. At the same time, they are also suitable for the sealing requirements of different media, such as oil, water, gas, etc.
  4. Strong dynamic sealing ability: able to provide reliable sealing during the reciprocating motion of the hydraulic cylinder. They prevent external impurities from entering the hydraulic cylinder and maintain pressure stability. At the same time, they can effectively reduce friction and leakage and improve system efficiency.
Function
  1. Prevent contamination: Preventing external pollutants from entering the hydraulic cylinder and maintaining the interior environment clean are critical to the normal operation of the hydraulic system and the life of other components.
  2. Prevent contamination: Keeping the internal environment clean and preventing external pollutants from entering the hydraulic cylinder are critical to the regular operation of the hydraulic system and the life of other components.
  3. Guide and support: The guide ring in the double acting piston seal guides and supports the piston rod. They minimize the piston rod’s deflection and swing amplitude during movement and assure the piston rod’s stability during reciprocating motion.
  4. Reduce friction and wear: The seal can reduce the friction between the piston and the piston rod, greatly reducing wear and energy loss. Helps improve hydraulic system efficiency and performance.
Conclusion

Double acting piston seals are rubber seals used in double-acting hydraulic cylinders to prevent hydraulic oil leakage and maintain pressure stability. They have good sealing performance, are resistant to wear, and can bear high pressures. They are adaptable, suited for a wide range of industries and media, and have a high dynamic sealing capability. They prevent leaks, contamination, guide and support the piston rod, and decrease friction, all of which improve the efficiency of the hydraulic system.