Polypac Rod Seal Manufacturers — Reliable Hydraulic Rod Seals

Polypac produces durable rod seals and O-rings using PTFE, NBR, FKM, FFKM and more. Advanced facilities and research partnerships deliver custom sealing solutions for demanding hydraulic applications.
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Product Information

Polypac Rod Seals — Durable, Custom Sealing Solutions

Polypac specializes in manufacturing high-performance rod seals and related oil seals designed to keep hydraulic systems leak-free and running smoothly. Founded in 2008, our factory spans over 10,000 m² with 8,000 m² of production space and advanced testing equipment, ensuring consistent quality for every component.

Practical Advantages

  • Long service life: Materials such as filled PTFE, NBR, FKM, EPDM and FFKM resist wear, heat and chemicals, reducing downtime and maintenance costs.
  • Precise fit: Controlled production and testing mean reliable sealing under pressure and motion, protecting cylinders and hydraulic components.
  • Custom options: We offer tailored geometries and material blends for special working conditions, including extreme temperatures and abrasive environments.

Materials and Expertise

Polypac began with filled PTFE varieties (bronze, carbon, graphite, MoS₂, glass) and has expanded to include a wide selection of elastomers. Our R&D collaborations with universities and research institutes keep us at the forefront of sealing material development, enabling practical solutions rather than one-size-fits-all parts.

Where Rod Seals Work Best

  • Mobile and industrial hydraulics
  • Construction and agricultural machinery
  • Marine and offshore equipment
  • High-pressure cylinders and valves

Why Choose Polypac

Polypac combines scale, technology and customization to deliver rod seals that solve real problems. Our strengths:

  • Large-scale production backed by advanced inspection
  • Fast prototyping and OEM support for volume and custom orders
  • Proven materials for improved leak prevention and friction control

Customer Focus

We treat each client’s application as unique. From material selection to final testing, our team ensures the seal you receive matches your performance needs and service expectations. Polypac’s practical approach helps you reduce maintenance, extend equipment life and lower total cost of ownership.

Contact Polypac to discuss rod seal options and get a tailored solution for your hydraulic systems.

Detailed display

  • GSJ-W-2
  • GSJ-W-1
  • GSJ-W-9

Question you may concern

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.
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 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.
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.

If you have any other questions, please write email to us or call us , we will reply you ASAP.

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Polypac Industrial Technology Co.,Ltd
No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.
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Hydraulic Seals
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With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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How Can We Help You?

Whether you need product details, technical support, or a custom solution, we’re here to assist.

Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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How Can We Help You?

Whether you need product details, technical support, or a custom solution, we’re here to assist.

Please enter your name not exceed 100 characters
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Please enter a valid phone number!
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Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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Have questions about our products or services? Let’s chat and find the best solution for you.

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Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.