O-Rings by Material
Viton O-Rings (FKM / Fluoroelastomer)
FKM O-rings — widely known by the trade name Viton® — provide superior chemical and high-temperature resistance. The premium general-purpose elastomer for applications beyond the reach of NBR.
Properties
Key Properties
| Property | Value |
|---|---|
| Temperature Range | −20 °C to +200 °C (short-term to +230 °C) |
| Hardness Range | 55 to 90 Shore A (75 Shore A standard) |
| Resists | Mineral and synthetic oils, fuels (including bio-diesel), hydraulic fluids, aromatic solvents, concentrated acids, ozone, UV |
| Avoid | Ketones (MEK, acetone), amines, hot water/steam above 150 °C, brake fluid (glycol-based), Skydrol |
| Typical Applications | Automotive fuel systems, aerospace, chemical processing, oil & gas, pharmaceutical, semiconductor |
| Available Standards | AS568, ISO 3601, BS 1806, AMS 7259, AMS 7276 |
For a complete material data sheet, see the full Viton O-Rings material page.
Sizes
Available Sizes
FITCO manufactures Viton O-Rings in all standard AS568 and metric sizes — from AS568-001 (0.74 mm ID) through AS568-475 (633.48 mm ID), plus metric sizes per ISO 3601, JIS B2401, and BS 1806.
- Standard durometers in stock
- Custom compounds and special durometers on request
- Cord stock available for field-cut rings
- Typical lead time: ex-stock for standard sizes, 2–4 weeks for custom
Resources
Related Pages
Full Material Data
Complete technical data sheet with chemical compatibility, compression set, and physical properties.
O-Ring Size Charts
AS568, Metric, JIS, BS, GB/T size tables with ID, OD, and cross-section dimensions.
Chemical Compatibility
Check material compatibility with your specific fluid or chemical environment.