DS117 FKM Asymmetrical Rod Seal for Hydraulic Cylinders

Manufactured according to industry‑standard asymmetrical rod seal dimensions, offering excellent interchangeability and easy installation. Excellent static and dynamic sealing performance, low friction, stable reciprocating operation without crawling. Outstanding heat‑resistance and medium resistance of FKM material, good wear‑resistance and anti‑extrusion performance, long‑term service life to reduce maintenance frequency. Optimized lip geometry provides reliable oil‑return performance, effectively preventing hydraulic fluid external leakage. Compatible with a wide range of hydraulic fluids, suitable for medium‑high pressure hydraulic systems. Maintains stable sealing performance under harsh working conditions for long‑time reliable operation.

DS117 asymmetrical single‑acting U‑cup rod seal adopts an asymmetrical cross‑section structure with precision‑machined sealing lip. Under hydraulic working pressure, the sealing lip is tightly pressed against the piston‑rod surface to block hydraulic‑oil outward leakage. During reciprocating movement, the specially‑designed sealing lip keeps stable contact stress to maintain consistent sealing performance. Its optimized oil‑return profile pulls residual oil film back into the cylinder, minimizing external fluid leakage. It can work as a primary main rod seal or an auxiliary secondary seal within combined sealing assemblies.

DS117 is an asymmetrical single‑acting U‑cup rod seal made of high‑performance FKM fluorine rubber. Optimized lip structure

provides stable contact stress during reciprocating motion and achieves good oil‑return effect to avoid external leakage.

Featuring outstanding heat‑resistance, chemical‑resistance and wear‑resistance, it performs reliably under harsh working

conditions. Suitable to serve as primary or auxiliary rod seal for various medium‑high‑pressure hydraulic cylinders, effectively

reducing equipment maintenance frequency.

Construction machinery: excavators, loaders, bulldozers, mobile cranes, road rollers Industrial machinery: hydraulic presses, injection molding machines, machine‑tool hydraulic systems Material handling: forklifts, aerial work platforms, lifting cylinders Agricultural machinery: tractors, harvesters, hydraulic working devices Engineering cylinders: mining machinery, metallurgical equipment, hydraulic support systems General‑purpose hydraulic cylinders: all kinds of standard and customized hydraulic cylinders

Q1: What is DS117 rod seal used for? A1: DS117 is an asymmetrical single‑acting U‑cup rod seal, mainly used to prevent hydraulic oil leakage on cylinder piston rods. It can be applied as main seal or auxiliary seal.

Q2: What are the benefits of FKM material? A2: FKM delivers excellent high‑temperature resistance and great compatibility with mineral oils, lubricants and many chemical media, performing well in high‑temperature harsh working conditions.

Q3: What is the maximum sliding speed? A3: Recommended maximum sliding speed is ≤1.0 m/s. Please consult our technical team for higher‑speed operating conditions.

Q4: Does DS117 support direct replacement for other standard rod seals? A4: It follows industry‑standard asymmetrical rod seal dimensions and can be used for replacement when groove dimensions match.

Q5: Can you supply other sizes? A5: We provide multiple standard sizes of asymmetrical rod seals. Custom sizes are also available upon your requirements.

Professional supplier of hydraulic seals with many years of industry experience. Strict quality control system to ensure stable and reliable product performance. Complete size inventory, fast delivery and short lead time. Professional technical support for model selection, installation and application solutions. Accept both small‑batch trial orders and bulk orders with competitive prices. Safe and standardized packaging, reliable global logistics and transportation. Focus on customer needs, providing long‑term stable supply and after‑sales service。

High‑performance FKM DS117 asymmetrical single‑acting rod seal. Delivers reliable static & dynamic sealing, great heat and chemical resistance for medium‑high pressure hydraulic cylinders.