PTFE Seal Solutions — Polypac Hydraulic & Oil Seal Experts
PTFE Seal Solutions by Polypac
Polypac is a scientific and technical hydraulic seal manufacturer and oil seal supplier specializing in PTFE Seal production, sealing material development, and custom solutions for demanding working conditions. Founded in 2008, Polypac combines advanced production equipment, a 10,000+ m² facility, and long-term R&D partnerships to deliver reliable seals that extend service life and reduce downtime.
Advanced Filled PTFE Materials
Our PTFE Seal lineup includes bronze-filled PTFE, carbon-filled PTFE, graphite PTFE, MoS₂-filled PTFE, and glass-filled PTFE. Each compound is engineered for specific performance benefits — friction reduction, wear resistance, thermal stability, or chemical compatibility — enabling selection of the optimal material for hydraulic cylinders, valves, pumps, and oil systems.
Precision Manufacturing & Testing
Polypac’s custom rubber ring and O-ring factory covers over 10,000 square meters with 8,000 m² of production space. We use industry-leading molding, machining, and inspection equipment to ensure dimensional accuracy and consistent sealing performance. Rigorous testing protocols validate endurance, leakage, and material properties before parts leave the factory.
Custom Sealing Solutions for Special Conditions
Whether you need low-friction dynamic seals, high-temperature static seals, or chemical-resistant components, our engineering team designs PTFE Seal solutions tailored to unique application demands. We support prototyping, material selection, and design optimization to solve problems in harsh environments and critical systems.
Broader Product Range & Material Expertise
Beyond PTFE Seal products, Polypac supplies O-rings and rubber components in NBR, FKM, silicone, EPDM, and FFKM. This material breadth lets us deliver integrated sealing systems and simplified sourcing for OEMs and maintenance teams.
Why Choose Polypac
With a decade-plus heritage in filled PTFE development, extensive lab collaboration with universities and research institutes, and one of China’s largest specialized manufacturing footprints, Polypac offers proven quality, fast customization, and global technical support. Contact us to specify PTFE Seal solutions optimized for your application and receive responsive, expert service.
PTFE 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.
What does "AS568" mean?
AS568 is the Aerospace Standard that defines the dimensions for over 360 standard O-ring sizes. It is the most widely accepted sizing system in North America and globally. An AS568 number (e.g., AS568-214) specifies a precise inside diameter and cross-section.
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.
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.
Plumbing & HVAC O-Ring Kits012 HITACHI | Assortments for Water, Refrigerant & Gas Connections
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
FKM O-Ring Kits | High-Temp & Chemical Resistant Seal Assortments
FKM O-Ring Kits | High-Temp & Chemical Resistant Seal Assortments
Buna-N (Nitrile) O-Ring Kits-008 KOMATSU | Oil Resistant Seal Assortments for General Purpose Use
Buna-N (Nitrile) O-Ring Kits-008 KOMATSU | Oil Resistant Seal Assortments for General Purpose Use
Metric O-Ring Kits-007 CAT-A | Precision Sized Assortments for European & Asian Machinery
Metric O-Ring Kits-007 CAT-A | Precision Sized Assortments for European & Asian Machinery
AS568 Standard O-Ring Kits-006 CAT-GM | SAE Dash Size Assortments for Hydraulics & Pneumatics
AS568 Standard O-Ring Kits-006 CAT-GM | SAE Dash Size Assortments for Hydraulics & Pneumatics
Plumbing & HVAC O-Ring Kits012 HITACHI | Assortments for Water, Refrigerant & Gas Connections
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
FKM O-Ring Kits | High-Temp & Chemical Resistant Seal Assortments
FKM O-Ring Kits | High-Temp & Chemical Resistant Seal Assortments
Buna-N (Nitrile) O-Ring Kits-008 KOMATSU | Oil Resistant Seal Assortments for General Purpose Use
Buna-N (Nitrile) O-Ring Kits-008 KOMATSU | Oil Resistant Seal Assortments for General Purpose Use
Metric O-Ring Kits-007 CAT-A | Precision Sized Assortments for European & Asian Machinery
Metric O-Ring Kits-007 CAT-A | Precision Sized Assortments for European & Asian Machinery
AS568 Standard O-Ring Kits-006 CAT-GM | SAE Dash Size Assortments for Hydraulics & Pneumatics
AS568 Standard O-Ring Kits-006 CAT-GM | SAE Dash Size Assortments for Hydraulics & Pneumatics
O-Ring Kits-005 CAT-Joint | Complete Assortments for Industrial Repair & Maintenance
O-Ring Kits-005 CAT-Joint | Complete Assortments for Industrial Repair & Maintenance
Nitrile & Viton O-Ring Kits CAT 4C8253 | Chemical & Temperature Resistant Seal Assortments.
Nitrile & Viton O-Ring Kits CAT 4C8253 | Chemical & Temperature Resistant Seal Assortments.
O-Ring Kits CAT 4C4782 | Assorted Seal Kits for Repair, Maintenance & DIY Projects
O-Ring Kits CAT 4C4782 | Assorted Seal Kits for Repair, Maintenance & DIY Projects
Tube-801 | Industrial & DIY Tubing for Plumbing, Pneumatics, Hydraulics & Protection
Tube-801 | Industrial & DIY Tubing for Plumbing, Pneumatics, Hydraulics & Protection
Tubes-T01 | Flexible & Rigid Pipe for Fluid, Air & Electrical Applications
Tubes-T01 | Flexible & Rigid Pipe for Fluid, Air & Electrical Applications
GSF Piston Seals for Straight Cylinders | Bidirectional Seals for Ram & Plunger Cylinders
GSF Piston Seals for Straight Cylinders | Bidirectional Seals for Ram & Plunger CylindersStay Updated with Industry Insights
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