Polypac Low Friction Wear Ring — Precision Sealing Solutions
Polypac Low Friction Wear Ring
Why choose a Low Friction Wear Ring?
Polypac's Low Friction Wear Ring is engineered to minimize friction while maximizing service life in hydraulic cylinders and reciprocating equipment. Designed for applications where reduced energy loss, lower heat generation, and prolonged component life matter, our wear rings support smoother rod and piston movement and protect critical components from metal-to-metal contact.
Materials & construction
Our Low Friction Wear Ring portfolio leverages Polypac's decades of material expertise, including bronze-filled PTFE, carbon-filled PTFE, graphite PTFE, MoS2-filled PTFE, and glass-filled PTFE. For elastomeric and sealing interfaces, we supply complementary O-rings and backup rings in NBR, FKM, silicone, EPDM and FFKM. Precision molding and machining on advanced production equipment ensure tight tolerances and consistent surface finish for optimal friction characteristics.
Performance & typical applications
Low friction wear rings from Polypac provide excellent wear resistance, low abrasion, and high chemical compatibility for hydraulic cylinders, heavy machinery, mobile hydraulics, and industrial actuators. They excel in high-cycle, high-load, and contaminated-fluid environments, reducing downtime and maintenance costs while improving system efficiency and sealing performance.
Customization & quality assurance
Polypac offers tailored Low Friction Wear Ring solutions to meet special working conditions. Our 10,000+ m2 facility, advanced testing equipment, and partnerships with universities and research institutes guarantee rigorous material testing and product validation. We provide custom sizes, compound selection, and integrated sealing kits to match OEM specifications.
The Polypac advantage
Founded in 2008, Polypac is a scientific and technical manufacturer focused on sealing material development and bespoke solutions. As one of China's leading seal producers, we combine industry-leading equipment, deep material knowledge, and responsive customer service—delivering Low Friction Wear Ring products that enhance performance and extend equipment life. Contact Polypac for samples, technical data sheets, and custom quotations.
Low Friction Wear Ring Display
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 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.
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 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.
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.
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