Polypac Heavy Duty Rod Seal Solutions
Polypac Heavy Duty Rod Seal Solutions
Product Overview
Polypac Heavy Duty Rod Seal is engineered to protect hydraulic cylinders in the most demanding conditions. Designed for high pressure, high speed, and abrasive environments, these rod seals deliver superior leakage control, long service life, and low friction. Available in filled PTFE variants and multiple elastomers, our seals are optimized for compatibility with hydraulic fluids and tough working temperatures.
Key Features & Benefits
Our Heavy Duty Rod Seal family offers enhanced abrasion resistance, excellent extrusion protection, and stable sealing under high differential pressures. Key benefits include reduced downtime, improved energy efficiency through lower friction, and reliable performance across a wide temperature range. Polypac’s precision molding ensures consistent dimensions and dependable sealing repeatability.
Materials & Custom Options
Leveraging decades of material expertise, Polypac supplies rod seals in bronze-, carbon-, graphite-, MoS₂- and glass-filled PTFE as well as elastomers including NBR, FKM, EPDM, silicone and FFKM. Custom blends and profiles are available to match unique fluid compatibilities, speed requirements, and shaft finishes. Our R&D partnerships with universities guarantee material innovation for special working conditions.
Manufacturing & Quality Assurance
With a factory space exceeding 8,000 m² and advanced production and testing equipment, Polypac ensures tight tolerances and robust quality control. We employ state-of-the-art testing protocols for wear, leakage, and thermal stability to validate each Heavy Duty Rod Seal batch before shipment. Long-term collaborations with research institutes support continuous improvement and certification readiness.
Applications & Industries
Polypac Heavy Duty Rod Seals are ideal for construction machinery, mining equipment, agricultural hydraulics, mobile cranes, and industrial presses. Wherever cylinders face heavy loads, contamination, and frequent cycling, our seals maintain performance and protect critical hydraulic systems.
Why Choose Polypac
Choosing Polypac means partnering with an experienced seal manufacturer focused on tailored solutions, fast prototyping, and scalable production. From standard rod seal profiles to custom engineered seals for extreme environments, we provide expert technical support and reliable supply chains to keep your equipment running longer.
Heavy Duty Rod Seal Display
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 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.
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.
What are common inspection and maintenance tips for shaft seals?
FKM: The Complete Guide to High-Temperature & Chemical-Resistant Sealing | Polypac
How to install a rotating shaft seal step-by-step?
The Ultimate Guide to Rod Seals: Types, Selection, Failures, & Future Trends in 2026
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