Polypac Vented Rod Seal

Product Overview

The Polypac Vented Rod Seal is engineered to protect hydraulic cylinders from pressure build-up and contamination while reducing wear on the rod and seal lips. Its vented design allows trapped air or fluid to escape, preventing cavitation and improving seal life. Designed for easy installation and consistent performance, this seal is ideal for mobile and industrial hydraulic applications.

Key Benefits

• Pressure relief — Vented groove prevents internal pressure build-up and reduces blow-by.
• Lower friction — Optimized profile reduces stiction and energy loss, improving system efficiency.
• Extended service life — Materials and design minimize wear on both rod and seal.
• Contamination resistance — Helps keep dirt and debris away from critical sealing surfaces.
• Easy replacement — Standard sizes and clear installation guidance shorten maintenance time.

Materials & Customization

Polypac supplies vented rod seals in a variety of elastomers and composites to match your application: NBR, FKM, PU and custom PTFE-laminated options. As a manufacturer with deep experience in filled PTFE and advanced sealing compounds, Polypac can tailor hardness, fabric reinforcements and coatings to meet temperature, chemical and abrasion requirements.

Why Choose Polypac?

Founded in 2008, Polypac combines strong R&D partnerships and advanced production facilities to deliver reliable sealing solutions. Our large factory, modern testing equipment and collaboration with universities ensure consistent quality and fast turnaround for both standard and custom parts. Choose Polypac Vented Rod Seals when you need a durable, low-friction seal that performs in real working conditions.

Applications

Commonly used in hydraulic cylinders for construction machinery, agricultural equipment, material handling and industrial presses where preventing pressure pockets and contamination extends system life and lowers maintenance costs.

Contact Polypac for size charts, material recommendations and custom design support to ensure the right vented rod seal for your application.