Materials
VMQ / PVMQ O-Rings
Silicone rubber
Silicone rubber
- Typical service window
- Typical project window: −60 to +200 °C
- Typical hardness
- Common quote band: 40–80 Shore A
- Where it performs
- Wide temperature flexibility, ozone and weather resistance; colour options.
- Watch-outs
- Abrasion, tear strength and gas permeability can limit dynamic or high-pressure use.
- Common applications
- Thermal cycling, electrical equipment and selected clean or special-purpose assemblies.
Specify the compound, not just the material family
Use the properties above to shortlist a material, not as guaranteed limits for every compound. Send the fluid and concentration, continuous and peak temperatures, pressure, movement and required service life. Final compound, hardness, tolerances and any compliance documents must be agreed for the order.
APPLICATION & QUOTATION
What to include in your enquiry
Made to order. We generally do not hold finished products in stock. A standard size is a dimensional reference, not a promise of stock availability.
| Specification | Information to provide |
|---|---|
| Geometry and units | For O-rings: inside diameter (ID) × cross-section (CS), in mm or inches. For other parts: drawing, profile, critical dimensions and mating interface. Include the drawing revision and tolerances if known. |
| Material and hardness | NBR, FKM/FPM, silicone or EPDM; required Shore A hardness and colour if known. If undecided, describe the working conditions. The final compound requires review. |
| Working conditions | Fluid or medium, minimum/maximum temperature, pressure, static or moving seal, and exposure to weather or chemicals. |
| Quantity and repeat orders | Sample quantity, first production batch and expected repeat demand. Minimum order quantity and tooling costs are confirmed for each project. |
Send the conditions—not just an O-ring colour.
Share a drawing, sample or the operating data above. We will structure the next conversation around a material, size and verification plan.