O-Rings by Material
Silicone O-Rings (VMQ)
Silicone O-rings offer the widest usable temperature range of any standard elastomer, combined with inherent biocompatibility — the natural choice for food, pharmaceutical, and medical sealing applications.
Properties
Key Properties
| Property | Value |
|---|---|
| Temperature Range | −60 °C to +200 °C (short-term to +230 °C) |
| Hardness Range | 20 to 80 Shore A (50–70 Shore A typical) |
| Resists | Dry heat, ozone, UV, aging, many dilute chemicals, oxygen, hot air |
| Avoid | Steam (degrades rapidly), fuels, oils, concentrated acids/alkalis, abrasive environments — silicone has low tear and abrasion resistance |
| Typical Applications | Food & beverage processing, medical devices, pharmaceutical, lighting fixtures, HVAC, aerospace, electrical insulation |
| Available Standards | AS568, ISO 3601, FDA 21 CFR 177.2600, USP Class VI, EC 1935/2004, 3-A Sanitary |
For a complete material data sheet, see the full Silicone O-Rings material page.
Sizes
Available Sizes
FITCO manufactures Silicone 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.