Polypac Rubber O-Rings — Precision Sealing Solutions
Polypac Rubber O-Rings — Precision Sealing Solutions
Overview
Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier specializing in Rubber O-Rings. Founded in 2008, we combine decades of material science experience with modern production to supply durable, high-performance seals for hydraulic, pneumatic and static sealing applications.
Materials & Compatibility
We offer Rubber O-Rings manufactured in NBR, FKM, silicone, EPDM and FFKM to meet chemical, temperature and media resistance requirements. Our history in filled PTFE compounds (bronze, carbon, graphite, MoS₂, glass) complements elastomer choices where low friction or extreme wear resistance is needed.
Manufacturing Capabilities
Polypac's custom rubber ring and O-ring factory spans more than 10,000 square meters with 8,000 square meters of factory space and industry-leading production and testing equipment. This scale enables fast turnaround for both standard sizes and fully customized profiles.
Quality Assurance & Testing
We maintain rigorous QA protocols with advanced testing—physical, chemical and dimensional—to ensure each Rubber O-Rings batch meets specification. Long-term partnerships with universities and research institutions support continuous material development and performance validation.
Custom Solutions for Special Working Conditions
Polypac specializes in tailored sealing solutions for extreme temperatures, aggressive media, high pressure and abrasive environments. From bespoke compound formulations to precision molding and post-processing, we engineer O-rings that perform where ordinary seals fail.
Applications & Industries
Our Rubber O-Rings serve hydraulic systems, oil & gas, automotive, aerospace, medical devices and industrial machinery. We design for leak-free operation, extended service life and minimal maintenance in both OEM and aftermarket projects.
Why Choose Polypac
Choosing Polypac means partnering with one of China’s largest dedicated seal developers and manufacturers. With advanced equipment, a robust R&D network and a commitment to quality, we deliver dependable Rubber O-Rings and sealing systems that protect performance and reduce downtime.
Rubber O-Rings Display
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.
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.
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 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.
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Mini O-Ring Kits-011 SUMITOM | Compact Assortments for Electronics, RC Models & Small Appliances
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FKM O-Ring Kits | High-Temp & Chemical Resistant Seal Assortments
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Metric O-Ring Kits-007 CAT-A | Precision Sized Assortments for European & Asian Machinery
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Plumbing & HVAC O-Ring Kits012 HITACHI | Assortments for Water, Refrigerant & Gas Connections
Mini O-Ring Kits-011 SUMITOM | Compact Assortments for Electronics, RC Models & Small Appliances
Mini O-Ring Kits-011 SUMITOM | Compact Assortments for Electronics, RC Models & Small Appliances
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FKM O-Ring Kits | High-Temp & Chemical Resistant Seal Assortments
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Buna-N (Nitrile) O-Ring Kits-008 KOMATSU | Oil Resistant Seal Assortments for General Purpose Use
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Metric O-Ring Kits-007 CAT-A | Precision Sized Assortments for European & Asian Machinery
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AS568 Standard O-Ring Kits-006 CAT-GM | SAE Dash Size Assortments for Hydraulics & Pneumatics
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O-Ring Kits-005 CAT-Joint | Complete Assortments for Industrial Repair & Maintenance
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Nitrile & Viton O-Ring Kits CAT 4C8253 | Chemical & Temperature Resistant Seal Assortments.
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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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