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High-Performance Pneumatic O-Rings for Industrial Automation
Precision-engineered sealing solutions designed for low friction, high-speed cycles, and extended service life in pneumatic systems.
- Optimized for Low Friction: Reduced breakout and running friction for smooth actuator movement.
- Superior Wear Resistance: High-durability materials including NBR, FKM, and Polyurethane.
- Global Standards Compliance: Manufactured to ISO 3601 and AS568 standards.
- Custom Engineering: Tailored profiles and material compounds for specific operating conditions.
Engineering Reliable Motion with Precision Pneumatic Seals
Pneumatic systems present unique sealing challenges compared to hydraulic systems. Operating primarily with air—a compressible medium—these systems require O-rings that can maintain a leak-tight seal while minimizing friction and resisting wear under high-frequency cycles.
At OringWorld, we specialize in pneumatic O-rings that address the “stick-slip” effect and thermal degradation. Our seals are designed to perform in both lubricated and non-lubricated (dry air) environments, ensuring your cylinders, valves, and actuators operate with maximum efficiency and minimal downtime.
Specialized Materials for Every Pneumatic Application
Standard NBR (Buna-N)
The most cost-effective solution for general pneumatic applications. Excellent resistance to petroleum-based lubricants.
- Hardness: 70-80 Shore A
- Best for: Standard air cylinders.
Low-Friction Seals
Compounded with internal lubricants (PTFE/MoS2) to reduce friction in dry air systems. Prevents “stiction”.
- Key Benefit: Smooth high-speed motion.
- Best for: High-frequency valves.
Polyurethane (PU)
Extreme abrasion resistance and high tensile strength. Preferred for heavy-duty actuators.
- Hardness: 90 Shore A
- Best for: High-pressure air tools.
Technical Data & Operating Limits
| Material Type | Hardness (Shore A) | Temp. Range (°C) | Pressure Rating | Primary Features |
|---|---|---|---|---|
| NBR (Nitrile) | 70 / 80 / 90 | -30 to +100 | Up to 16 Bar | Standard, Oil Resistant |
| FKM (Viton) | 75 / 80 / 90 | -20 to +200 | Up to 20 Bar | High Temp, Chemical Proof |
| Polyurethane | 90 | -40 to +80 | Up to 40 Bar | Wear Resistant, High Strength |
| EPDM | 70 | -50 to +150 | Up to 10 Bar | Weathering & Steam Resistant |
Frequently Asked Questions
Q: What is the main difference between pneumatic and hydraulic O-rings?
A: Pneumatic O-rings are designed for lower pressures (typically <16 bar) and focus on low friction and wear resistance against dry or lightly lubricated air. Hydraulic O-rings handle much higher pressures and rely on the hydraulic fluid for lubrication.
Q: Can I use standard NBR O-rings for dry air applications?
A: While possible, standard NBR may wear quickly in dry air. We recommend our internally lubricated NBR or Polyurethane compounds for extended life in non-lubricated systems.
Q: Do you provide custom sizes for non-standard pneumatic cylinders?
A: Yes, we can manufacture custom O-rings to any ID and Cross-Section (CS) requirements without expensive tooling costs for many sizes.