dbde24e1-4012-47b6-8db4-e89ee4ca5a70 - Polypac

English

Turkish

dbde24e1-4012-47b6-8db4-e89ee4ca5a70

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.

Vented Rod Seal Display

FAQ:

What is the difference between a static seal and a dynamic seal?

A Static Seal is used between two surfaces that do not move relative to each other (e.g., pipe flanges, end caps). O-rings and gaskets are common static seals. A Dynamic Seal is used between surfaces that do move (e.g., piston and cylinder, rotating shaft). Rod seals, piston seals, and rotary shaft seals are designed for this purpose.

Why did my O-ring fail prematurely?

Common causes of O-ring failure include: Chemical Incompatibility: Swelling, softening, or cracking due to fluid exposure. Improper Sizing: Using an incorrect size leads to over-compression or inadequate sealing force. Abrasion: Wear and tear from rough surface finishes or contaminated fluid. Extrusion: The seal is forced into the gap between metal parts under high pressure. Installation Damage: Nicks, cuts, or twists during assembly.

How important is surface finish on the metal parts that contact the seal?

Extremely important. A rough surface will abrade and wear out the seal quickly, causing leaks. A finish that is too smooth can prevent a lubricating film from forming. A typical recommended surface finish for dynamic applications is 0.2 to 0.8 μm (8-32 μin) Ra.

What is the purpose of the metal spring in a rotary shaft seal?

The garter spring in a shaft seal (e.g., FSKR, SPGO types) provides a constant radial force on the sealing lip. This ensures consistent contact with the rotating shaft, compensating for minor wear, eccentricity, and vibration to prevent lubricant leakage.

How can I prevent seal damage during installation?

Use Tools: Always use dedicated installation tools (e.g., picks, cones, guides). Lubricate: Always lubricate the seal and the contact surface. Protect Sharp Edges: Cover sharp threads and edges with tape or use an installation sleeve. Check the Groove: Ensure the installation groove is clean, deburred, and undamaged.

Table of Contents

≡

Vented Rod Seal Solutions by Polypac
What is a Vented Rod Seal?
Performance and Materials
Typical Applications
Why Choose Polypac?
Customization & Quality Assurance
Get Started
Vented Rod Seal Display

Related Blog

Guiding Elements:The Unsung Heroes of Cylinder Performance & Longevity | Polypac

Discover how Polypac’s Guiding Elements and wear rings enhance cylinder performance and longevity. Explore the unsung heroes behind durable, efficient hydraulic systems that keep industries running smoothly. Trust Polypac for precision-engineered solutions that extend equipment life and reduce maintenance.

Guiding Elements:The Unsung Heroes of Cylinder Performance & Longevity | Polypac

How do rod seals differ from piston seals? | Insights by Polypac

This article explores the distinctions between rod seals and piston seals, addressing key concerns for procurement professionals in the seal manufacturing industry, and highlights the advantages of Polypac seals.

How do rod seals differ from piston seals? | Insights by Polypac

What temperature ranges can different rod seals withstand? | Insights by Polypac

This article explores the temperature resistance capabilities of various rod seals, addressing common procurement concerns in the seal manufacturing industry, and highlights the advantages of Polypac seals.

What temperature ranges can different rod seals withstand? | Insights by Polypac

What are common types of rod seals used in hydraulic cylinders? | Insights by Polypac

This article explores the various types of rod seals used in hydraulic cylinders, addressing key considerations for procurement professionals in the seal manufacturing industry. It provides detailed insights into seal materials, design features, performance factors, and maintenance practices to assist in making informed purchasing decisions.

What are common types of rod seals used in hydraulic cylinders? | Insights by Polypac