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Polypac Metric Piston Seal Kit

Polypac Metric Piston Seal Kit delivers reliable hydraulic sealing with durable materials, wide compatibility, and factory-tested quality. Easy installation, strong wear resistance, and tailored support from an experienced seal manufacturer.

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Product Information

Metric Piston Seal Kit — Polypac

Polypac's Metric Piston Seal Kit is designed to give hydraulic systems reliable performance and long service life. The kit combines robust materials and precise manufacturing to minimize leakage, reduce downtime, and simplify maintenance.

Key Features

High-quality materials: PTFE, NBR, FKM options and more for different temperatures and fluids.
Complete kit: piston seals, backup rings and O-rings sized to metric standards for easy replacement.
Industry-grade durability: low friction, excellent wear resistance, and stable sealing under pressure.
Factory-tested: produced on advanced equipment and inspected to ensure fit and performance.

Benefits for Your Equipment

Reduced leakage and improved system efficiency.
Longer maintenance intervals due to better wear performance.
Quick, hassle-free installation—minimizes machine downtime.
Flexible material choices to match hydraulic fluid and temperature needs.

Materials & Compatibility

Polypac offers seals in PTFE (including filled PTFE variants), NBR, FKM, EPDM, silicone, and FFKM. This variety ensures compatibility with common hydraulic oils, water-glycol fluids, and special working conditions. Metric sizing ensures a precise fit for European and international equipment.

Why Choose Polypac

Founded in 2008, Polypac specializes in sealing materials and custom solutions. With a 10,000+ m² facility and advanced production and testing equipment, we work closely with research institutions to deliver reliable products. Our experience with filled PTFE and diverse elastomers means you get a kit engineered for real-world performance.

Installation & Support

The kit is user-friendly for maintenance teams. Clear sizing and step-by-step guidance reduce installation errors. Polypac offers technical support and custom options if your application demands a tailored solution.

Choose the Polypac Metric Piston Seal Kit for dependable sealing, easier maintenance, and proven manufacturing quality.

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Q&A

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.

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.

What does "AS568" mean?

AS568 is the Aerospace Standard that defines the dimensions for over 360 standard O-ring sizes. It is the most widely accepted sizing system in North America and globally. An AS568 number (e.g., AS568-214) specifies a precise inside diameter and cross-section.

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.

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dbde24e1-4012-47b6-8db4-e89ee4ca5a70

Polypac Industrial Technology Co.,Ltd

+86 189 2463 6168

rose@dmsseals.com

No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.

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