Hydraulic Cylinder Seal Kit — Polypac Reliable Sealing Solutions
Hydraulic Cylinder Seal Kit — Reliable Sealing Solutions from Polypac
Product Overview
Polypac's Hydraulic Cylinder Seal Kit provides a complete, ready-to-install set of seals engineered for hydraulic cylinders in mobile equipment, industrial presses, and heavy machinery. Each kit is optimized for leakage control, low friction, and long service life. The Hydraulic Cylinder Seal Kit combines precision-molded elastomers and filled PTFE components for superior performance across a wide range of pressures and temperatures.
Advanced Materials & Proven PTFE Expertise
Built on Polypac’s founding strengths in filled PTFE, our kits leverage bronze-filled, carbon-filled, graphite PTFE, MoS₂-filled, and glass-filled PTFE to reduce wear and friction. Complementary O-rings and rubber parts are available in NBR, FKM, silicone, EPDM, and FFKM so the Hydraulic Cylinder Seal Kit can be tailored for chemical compatibility, temperature resistance, and abrasion conditions.
Manufacturing Capacity & Customization
Polypac’s custom rubber ring and O-ring factory spans over 10,000 m² with 8,000 m² of production space and industry-leading equipment. Since 2008 we have expanded from PTFE seals to a full range of elastomers and custom geometries. We collaborate with universities and research institutes to develop sealing materials and offer bespoke solutions for special working conditions—custom sizes, profiles, and material blends are routine.
Performance & Quality Assurance
Every Hydraulic Cylinder Seal Kit undergoes strict dimensional inspection and performance testing to verify pressure endurance, extrusion resistance, and friction characteristics. Our testing ensures consistent sealing under shock loads, high pressure, and temperature cycling. The result: reduced maintenance intervals, fewer leaks, and longer mean time between failures for your hydraulic systems.
Applications & Why Choose Polypac
Choose Polypac’s Hydraulic Cylinder Seal Kit for construction equipment, agricultural machinery, hydraulic presses, and special industrial applications where reliability matters. With decades of PTFE expertise, advanced production facilities, and rapid customization, Polypac delivers seals that balance sealing integrity, cost-efficiency, and operational uptime. Contact us for tailored kits and technical support to match your specifications.
Hydraulic Cylinder Seal Kit 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 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.
How important is surface finish on the metal parts that contact the seal?
Extremely important. A rough surface will abrade and wear out the seal quickly, causing leaks. A finish that is too smooth can prevent a lubricating film from forming. A typical recommended surface finish for dynamic applications is 0.2 to 0.8 μm (8-32 μin) Ra.
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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