Mobile Equipment Seal Solutions by Polypac
Mobile Equipment Seal Solutions
Why Polypac
Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier with decades of combined expertise. Since 2008 we have specialized in high-performance sealing materials and custom solutions for demanding mobile equipment applications, combining advanced production equipment with collaborative R&D partnerships.
Comprehensive Product Range
Our Mobile Equipment Seal portfolio includes hydraulic seals, oil seals, and precision O-rings in a wide range of sizes and compounds. Starting from filled PTFE variants to elastomeric options like NBR, FKM, silicone, EPDM and FFKM, Polypac supplies seals optimized for both off-the-shelf and bespoke mobile equipment needs.
Advanced Materials & Performance
We manufacture bronze-filled, carbon-filled, graphite-filled, MoS2-filled and glass-filled PTFE to deliver superior wear resistance, low friction and temperature stability. Combined with High Quality elastomers, our materials resist abrasion, chemical attack and harsh operating conditions commonly found in construction, mining, and agricultural machinery.
Custom Sealing & Rigorous Testing
Polypac’s custom rubber ring and O-ring factory spans over 10,000 square meters with advanced testing capabilities. We provide rapid prototyping, tailored compound selection and endurance testing to validate Mobile Equipment Seal performance under shock, vibration and contaminant exposure.
Applications & Operational Benefits
Designed for mobile hydraulic cylinders, steering units, axles and powertrain systems, our seals reduce leakage, extend service intervals and lower total cost of ownership. Robust sealing improves reliability in off-highway vehicles, loaders, excavators and specialty mobile platforms.
Quality Assurance & Support
With industry-leading production controls and long-term cooperation with universities and research institutes, Polypac ensures consistent quality and continuous improvement. We offer technical support, custom material development and global supply capabilities to keep your mobile equipment operating at peak performance.
Mobile Equipment Seal Display
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.
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.
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.
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.
Are PTFE seals better than elastomers for chemical resistance?
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Polypac is a trusted global supplier of high-performance sealing solutions, providing OEM & ODM services for industries worldwide.
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