Vented Rod Seal Solutions by Polypac

Vented Rod Seal Solutions by Polypac

Polypac specializes in high-performance Vented Rod Seal products designed to protect hydraulic cylinders from contamination, control pressure equalization, and extend service life. Built on decades of sealing expertise and advanced material science, our vented rod seals deliver reliable performance across a wide range of operating conditions.

What is a Vented Rod Seal?

A Vented Rod Seal is a specialized hydraulic seal that allows controlled venting of trapped air or pressure differentials near the piston rod while maintaining fluid retention and contamination exclusion. It is ideal for systems where pressure equalization prevents seal extrusion and reduces rod friction during operation.

Performance and Materials

Polypac produces Vented Rod Seal designs using High Quality materials including PTFE variants (bronze-filled, carbon-filled, MoS2, glass-filled), NBR, FKM, EPDM, silicone, and FFKM. Tailored compound selection optimizes wear resistance, low friction, temperature tolerance, and chemical compatibility to match specific hydraulic fluids and operating temperatures.

Typical Applications

Our vented rod seals are widely used in hydraulic cylinders for construction equipment, agricultural machinery, industrial presses, and mobile hydraulics where contamination management and smooth rod movement are essential. They are particularly effective in systems exposed to dirt, moisture, and frequent pressure fluctuations.

Why Choose Polypac?

Founded in 2008, Polypac combines an 8,000 m2 factory area, advanced production and testing equipment, and longstanding partnerships with universities and research institutes. As one of China’s leading seal manufacturers, we offer rapid prototyping, volume production, and full technical support for custom Vented Rod Seal solutions.

Customization & Quality Assurance

We provide custom seal geometries, compound development, and strict quality control including dimensional inspection, material testing, and functional validation to meet OEM specifications. Our capabilities cover both standard Vented Rod Seal profiles and bespoke designs for special working conditions.

Get Started

Contact Polypac to specify the best Vented Rod Seal for your application. Whether you require off-the-shelf parts or engineered sealing systems, our experts will help you reduce leakage risks, lower maintenance costs, and improve hydraulic reliability.