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AS568 Standard O-Rings: Precision Sealing Solutions for Industrial Excellence
High-performance elastomeric seals manufactured to SAE AS568 standards, ensuring universal compatibility and reliable performance in critical environments.
- Full Range of Dash Sizes (-001 to -932)
- Premium Materials: NBR, FKM, EPDM, Silicone, PTFE
- Compliance: ISO 3601, FDA, RoHS, REACH

Understanding AS568 Standard Dimensions & Tolerances
The AS568 standard, developed by the Society of Automotive Engineers (SAE), provides a systematic method for specifying O-ring dimensions. It defines the Inside Diameter (ID) and Cross Section (CS) for 394 standard O-ring sizes, identified by unique dash numbers.
Premium Elastomer Materials for Every Operating Condition
| Material | Temp Range | Key Properties | Common Applications |
|---|---|---|---|
| Nitrile (NBR) | -40°C to 120°C | Oil & Fuel Resistance | General Industrial, Hydraulics |
| Viton™ (FKM) | -20°C to 200°C | Chemical & Heat Resistance | Aerospace, Chemical Processing |
| EPDM | -50°C to 150°C | Weather & Steam Resistance | Automotive, Water Systems |
| Silicone (VMQ) | -60°C to 225°C | High/Low Temp Stability | Medical, Food Grade |
Your Strategic Partner in Industrial Sealing Technology
Advanced Manufacturing
Utilizing state-of-art compression molding and injection molding techniques.
Quality Assurance
100% visual inspection and dimensional verification to ISO 9001 standards.
Frequently Asked Questions about AS568 O-Rings
What does AS568 stand for in O-rings?
AS568 refers to the Aerospace Size Standard for O-rings, published by the Society of Automotive Engineers (SAE). It defines the standard dimensions and tolerances for O-rings used across various industries.
How do I choose the right material?
Material selection depends on operating temperature, chemical compatibility, pressure, and regulatory requirements. Our engineering team can assist you in choosing the optimal elastomer.