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

English

Turkish

dbde24e1-4012-47b6-8db4-e89ee4ca5a70

Hydraulic Piston Seal Solutions by Polypac

Hydraulic Piston Seal Solutions by Polypac

High Quality piston sealing for demanding hydraulics

Polypac specializes in hydraulic piston seal production and customized sealing solutions. Our hydraulic piston seal range is engineered for pressure stability, low friction and long service life in mobile and industrial hydraulic cylinders. Backed by more than a decade of material science expertise, Polypac delivers reliable sealing performance across a wide range of operating temperatures and pressures.

Materials engineered for performance

We design piston seals using filled PTFE formulations (bronze, carbon, graphite, MoS₂, glass) and high-performance elastomers including NBR, FKM, silicone, EPDM and FFKM. This material diversity lets us optimize wear resistance, extrusion resistance and chemical compatibility for each hydraulic piston seal application, reducing downtime and maintenance costs.

Custom manufacturing and advanced testing

Polypac's custom rubber ring and O-ring factory spans over 10,000 m² with 8,000 m² of production space and industry-leading equipment. Our in-house testing labs and process controls ensure each hydraulic piston seal meets dimensional tolerances, surface finish and endurance standards. We collaborate with universities and research institutes to continuously refine sealing compounds and manufacturing techniques.

Design flexibility and application fit

Whether you need standard piston seals or bespoke geometries for extreme environments, Polypac offers tailored designs for high-pressure cylinders, servo valves, telescopic booms and subsea systems. Our engineers optimize cross-sections, lip profiles and back-up configurations to maximize sealing life and system efficiency.

Why choose Polypac

As one of China’s leading seal manufacturers since 2008, Polypac combines scientific R&D with large-scale production capacity. We offer quick prototyping, consistent quality, and global supply capabilities. Choosing Polypac means partnering with a supplier focused on material innovation, traceable testing and responsive custom engineering for every hydraulic piston seal requirement.

Get started

Contact Polypac to specify material, size and working-condition requirements for your hydraulic piston seal. Our team will provide technical recommendations, samples and production timelines to help you lower lifecycle cost and improve hydraulic reliability.

hydraulic piston seal Display

FAQ:

Can I reuse a seal?

We strongly recommend never reusing seals. Once compressed and used, a seal takes a "set" and its elastic properties are degraded. Reusing it almost always results in a leak. Always install a new seal during any maintenance or repair.

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.

When should I use a spring-energized seal instead of a standard elastomeric seal?

Consider a spring-energized seal (e.g., GSF, SPN types) for demanding applications involving: Extreme Temperatures (below -30°C or above +200°C) Aggressive Chemicals that elastomers can't handle Very Low Leakage or "Zero Leakage" requirements Poor Lubricity or dry running conditions The internal spring maintains constant sealing force, compensating for wear and system variables.

How do I choose the right material for my sealing application?

Material selection depends on four key factors: Media: What fluid or gas will the seal contact? (e.g., petroleum oil, water, chemicals, steam) Temperature: What is the minimum and maximum operating temperature? Pressure: What is the system's operating pressure? Are there pressure spikes? Application: Is it a static, dynamic, or rotary seal? Example: NBR (Buna-N) is excellent for standard hydraulic oil, while FKM (Viton®) is needed for high temperatures or aggressive chemicals.

What is the difference between NBR and FKM materials?

NBR (Nitrile/Buna-N): A general-purpose, cost-effective material with excellent resistance to petroleum-based oils and fuels. It has a standard temperature range of -30°C to +100°C (-22°F to +212°F). FKM (Fluoroelastomer/Viton®): A premium material with excellent resistance to high temperatures (up to 200°C+), chemicals, and oils. It is used in more severe environments but is more expensive than NBR.

Table of Contents

≡

Hydraulic Piston Seal Solutions by Polypac
High Quality piston sealing for demanding hydraulics
Materials engineered for performance
Custom manufacturing and advanced testing
Design flexibility and application fit
Why choose Polypac
Get started
hydraulic piston seal Display

Related Blog

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

Rotary Seals: Mastering the Challenge of Dynamic Shaft Sealing

Polypac’s Rotary Seals provide advanced solutions for dynamic sealing challenges in rotating shafts. Designed for durability and precision, our seals ensure optimal performance and reliability in demanding industrial applications. Discover expert sealing technology with Polypac today.

Rotary Seals: Mastering the Challenge of Dynamic Shaft Sealing