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Polypac PTFE Rod Seal — Durable Filled PTFE Rod Seals for Hydraulic Systems

Polypac PTFE Rod Seal provides low friction, excellent chemical resistance and long service life. Made from various filled PTFE grades and available in custom sizes, ideal for hydraulic and harsh working conditions.

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Product Information

Polypac PTFE Rod Seal — Reliable performance for demanding applications

Polypac PTFE Rod Seal is a high-performance rod seal designed for hydraulic cylinders and equipment that require low friction, excellent wear resistance and strong chemical stability. Built from filled PTFE compounds such as bronze-filled, carbon-filled, graphite-filled, MoS2-filled and glass-filled PTFE, these rod seals deliver consistent sealing under pressure, speed and temperature variations.

Key benefits

Low friction and smooth rod movement, reducing wear on mating surfaces.
Excellent chemical and temperature resistance for diverse fluids and environments.
High wear and extrusion resistance thanks to optimized filled PTFE formulations.
Long service life and reduced maintenance frequency.

Common applications

Polypac PTFE Rod Seals are suitable for hydraulic cylinders, industrial presses, mobile equipment, marine systems and other machinery operating in oil, water-glycol or synthetic fluids. They perform well in high-speed, high-pressure and corrosive environments.

Customization and sizes

Polypac offers custom sizes and material selections to match specific working conditions. With a large production facility and advanced equipment, we can produce tight-tolerance rod seals to fit unique cylinder designs and special applications.

Quality and manufacturing

Founded in 2008, Polypac is a scientific and technical seal manufacturer. Our factory covers more than 10,000 square meters and uses industry-leading production and testing equipment. We maintain close cooperation with universities and research institutes to ensure material development and product reliability. Every PTFE rod seal undergoes strict inspection and performance testing before shipment.

Why choose Polypac

Choose Polypac for deep material expertise, stable supply and proven performance. Our experience with filled PTFE compounds and wide range of elastomer options means we can recommend the best seal for your needs and provide reliable long-term support.

Contact Polypac to discuss your rod seal requirements, request samples or get a custom quotation tailored to your machinery and working conditions.

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Q&A

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.

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.

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 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.

If you have another questions, please feel free to contact us.

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PRODUCTS

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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