Zero Leakage Hydraulic Seal — Polypac Precision Sealing Solutions
Zero Leakage Hydraulic Seal — Polypac Precision Sealing Solutions
About Polypac
Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier focused on seal production, sealing material development, and customized sealing solutions for special working conditions. Founded in 2008, our factory covers over 10,000 m² with 8,000 m² of production space. We began with filled PTFE (bronze, carbon, graphite, MoS₂, glass) and now offer O-rings in NBR, FKM, silicone, EPDM, and FFKM to meet diverse application needs.
Zero Leakage Hydraulic Seal Performance
Our Zero Leakage Hydraulic Seal is engineered for absolute containment under high pressure, wide temperatures, and aggressive fluids. Combining advanced filled PTFE compounds and high-performance elastomers, the seals provide low friction, excellent wear resistance, and superior extrusion control—delivering predictable, long-term zero-leak performance in hydraulic cylinders, valves, and rotary systems.
Advanced Manufacturing & Testing
Polypac uses industry-leading production and testing equipment to ensure each Zero Leakage Hydraulic Seal meets strict tolerances. From precision machining and molding to dynamic leakage testing and material analysis, our process minimizes variability and guarantees consistent sealing effectiveness. Long-term partnerships with universities and research institutions support continuous material and design innovation.
Custom Solutions & Applications
We specialize in tailored sealing solutions for harsh or specialized environments—high-speed hydraulics, subsea systems, mobile equipment, and industrial automation. Custom profiles, compound selection, and O-ring integration ensure optimal fit and performance. Polypac’s engineering team collaborates with clients to specify the correct geometry and material for true zero leakage under operating conditions.
Why Choose Polypac
Choose Polypac for proven Zero Leakage Hydraulic Seal expertise: decades of material development, large-scale manufacturing capacity, rigorous quality control, and responsive customization. Contact us to evaluate your sealing challenges and secure leak-free hydraulic performance backed by lab-verified results and industry experience.
Zero Leakage Hydraulic Seal Display
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.
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.
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