Specifications & Selection Guide
| Property | Typical Range / Notes |
| Material | Virgin PTFE (Polytetrafluoroethylene) |
| Temperature Range | -190°C ~ +260°C (short-term up to 300°C) |
| Chemical Resistance | Excellent (all acids, bases, solvents; inert to most chemicals) |
| Friction Coefficient | ~0.04 |
| Pressure Limit | Up to 1500 kg/cm² with reinforcement |
| Standard Sizes | Custom and standard AS568, ISO 3601-1, GB/T3452.1 |
| Installation Recommendations | Use compatible lubricant, avoid sharp edges, compression 10–25% depending on motion |
Typical Applications
| Application Area | Examples |
| Chemical & Industrial | Corrosive pipelines, reactors, hydraulic systems, chemical dosing equipment |
| Food & Beverage | Filling machines, sterilizers, food processing valves, sanitary fittings |
| Medical & Pharmaceutical | Medical device seals, sterilizers, biopharmaceutical process equipment |
| Aerospace & Automotive | Hydraulic systems, engines, actuators, high-speed moving seals |
| Semiconductor & Electronics | High-purity fluid systems, vacuum applications, plasma-resistant seals |
Features
Extreme Temperature Resistance
PTFE O rings operate reliably in a wide range from -190°C to +260°C, with short-term exposure tolerances up to 300°C. Their molecular structure ensures dimensional stability under thermal cycling.Outstanding Chemical Inertness
Resistant to acids, alkalis, solvents, and oxidizing agents, PTFE O-Rings maintain integrity in highly corrosive environments, including industrial chemical applications.Low Friction & Self-Lubrication
With a friction coefficient of ~0.04, PTFE O rings reduce wear and energy loss in moving components such as hydraulic pistons, cylinders, and rotary equipment.High Mechanical Strength & Pressure Capability
When combined with reinforcement rings or back-up supports, PTFE O-Rings can withstand pressures up to 1500 kg/cm², making them suitable for high-pressure sealing applications.Food & Medical Grade Compliance
PTFE O-Rings are available in FDA-compliant, non-toxic, and odorless grades, ideal for food processing, beverage, and medical equipment.Long Service Life
Excellent resistance to aging, UV, and radiation ensures extended operational life, reducing maintenance and downtime.
QZSEALS offers a comprehensive range of PTFE O rings in standard and custom sizes, including reinforced options for high-pressure and high-temperature applications. Our PTFE O rings are stocked for immediate delivery, and we can manufacture customized solutions to meet your precise specifications.
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