O-Rings by Material
EPDM O-Rings
EPDM O-rings excel in hot water, steam, brake fluid, and outdoor weathering applications — environments where NBR and FKM would fail. The go-to compound for non-petroleum service.
Properties
Key Properties
| Property | Value |
|---|---|
| Temperature Range | −50 °C to +150 °C |
| Hardness Range | 30 to 90 Shore A (70 Shore A standard) |
| Resists | Steam, hot water, brake fluid (glycol-based), phosphate-ester hydraulic fluids (Skydrol), dilute acids and alkalis, ozone, UV, weathering |
| Avoid | Petroleum oils, fuels, mineral greases, aromatic solvents — EPDM swells rapidly in hydrocarbons |
| Typical Applications | Automotive cooling and braking systems, water treatment, HVAC, food & beverage, outdoor equipment, steam systems |
| Available Standards | AS568, ISO 3601, FDA 21 CFR 177.2600 (selected compounds), NSF/ANSI 61 |
For a complete material data sheet, see the full EPDM O-Rings material page.
Sizes
Available Sizes
FITCO manufactures EPDM 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
Material
Full Material Data
Complete technical data sheet with chemical compatibility, compression set, and physical properties.
Reference
O-Ring Size Charts
AS568, Metric, JIS, BS, GB/T size tables with ID, OD, and cross-section dimensions.
Guide
Chemical Compatibility
Check material compatibility with your specific fluid or chemical environment.