The R11 type seal ring is a high-performance one-way piston rod seal made of premium polyurethane (PU) material. Adopting a symmetrical cross-section design and complying with ISO 5597 standard groove specifications, this seal is optimally designed for hydraulic systems with limited radial cavity space. It achieves interference fit with the outer edge of the mounting cavity, featuring compact installation, excellent fitting performance and reliable sealing capacity.

The R11 seal is manufactured from high-quality polyurethane material, which integrates outstanding elasticity, compression resilience and abrasion resistance. The material features stable physical properties, not easy to deform under long-term compression, aging or wear. It maintains consistent sealing preload in dynamic and static working conditions, and delivers excellent comprehensive adaptability to conventional hydraulic media and complex operating environments.

• One-way Sealing Function: It is a professional piston rod seal with stable one-way sealing performance, which can effectively lock hydraulic pressure in a single direction, prevent medium backflow, and meet the one-way pressure maintaining and sealing requirements of hydraulic equipment.
• Symmetrical Cross-section Design: The optimized symmetrical section structure simplifies installation and reverse assembly risks, ensures uniform stress on the seal ring, avoids eccentric wear, and improves overall service stability.
• ISO 5597 Standard Cavity: Designed in strict accordance with ISO 5597 international standard groove dimensions, it features strong versatility and interchangeability, convenient for standardized installation and replacement of equipment.
• Interference Fit with Cavity Outer Edge: The seal adopts outer edge interference fit with the mounting cavity, realizing tight compression and firm fitting, effectively avoiding seal loosening, displacement and leakage caused by vibration and pressure fluctuation.
• Excellent Dynamic and Static Sealing Performance: It delivers superior sealing effect in both static stationary state and dynamic reciprocating motion, with low friction, good pressure resistance and zero leakage under rated working conditions.
• High Tolerance for Groove Surface Roughness: The unique structural design allows the groove bottom surface to have higher surface roughness, which reduces the processing precision requirements of the mounting groove, lowers equipment processing cost and improves applicability.
• Compact Design for Limited Radial Space: Targeted at structural design scenarios with limited radial dimension of the cavity, the seal features small installation space occupation and compact structure, perfectly adapting to miniaturized and compact hydraulic system layout requirements.

Widely used for piston rod sealing of various hydraulic cylinders with limited radial cavity space, suitable for standard hydraulic equipment that follows ISO 5597 groove specifications, especially applicable for working conditions requiring one-way pressure maintaining and one-way sealing.