18mm ID x 2.5mm C/S (23mm OD) Red Silicone O Ring
£0.05 – £0.75 / each
Was
each
total
208 in stock, ready for shipping today.
Add 4 more and save 33.0%.
Red Silicone O Rings
135 products
- View specification
5mm ID x 2mm C/S (9mm OD) Red Silicone O Ring
£0.02 – £0.50 / each
Waseach totalView specification1460 in stock, ready for shipping today.
Add 4 more and save 33.0%.
4mm ID x 2.5mm C/S (9mm OD) Red Silicone O Ring
£0.03 – £1.00 / each
Waseach totalView specification227 in stock, ready for shipping today.
Add 4 more and save 33.0%.
12mm ID x 3mm C/S (18mm OD) Red Silicone O Ring
£0.05 – £0.75 / each
Waseach totalView specification418 in stock, ready for shipping today.
Add 4 more and save 33.0%.
32mm ID x 3mm C/S (38mm OD) Red Silicone O Ring
£0.16 – £1.58 / each
Waseach totalView specification118 in stock, ready for shipping today.
Add 4 more and save 25.0%.
28mm ID x 3mm C/S (34mm OD) Red Silicone O Ring
£0.12 – £1.23 / each
Waseach totalView specification247 in stock, ready for shipping today.
Add 4 more and save 25.0%.
3mm ID x 3mm C/S (9mm OD) Red Silicone O Ring
£0.03 – £1.00 / each
Waseach totalView specification246 in stock, ready for shipping today.
Add 4 more and save 33.0%.
38mm ID x 3mm C/S (44mm OD) Red Silicone O Ring
£0.25 – £1.95 / each
Waseach totalView specification260 in stock, ready for shipping today.
Add 4 more and save 25.0%.
1.5mm ID x 1mm C/S (3.5mm OD) Red Silicone O Ring
£0.03 – £1.00 / each
Waseach totalView specification103 in stock, ready for shipping today.
Add 4 more and save 33.0%.
BS015 Red Silicone O Ring - 14mm ID x 1.78mm C/S (17.56mm OD)
£0.03 – £1.00 / each
Waseach totalView specification300 in stock, ready for shipping today.
Add 4 more and save 33.0%.
17mm ID x 3mm C/S (23mm OD) Red Silicone O Ring
£0.06 – £0.80 / each
Waseach totalView specification285 in stock, ready for shipping today.
Add 4 more and save 25.0%.
BS029 Red Silicone O Ring - 37.82mm ID x 1.78mm C/S (41.38mm OD)
£0.10 – £1.20 / each
Waseach totalView specification325 in stock, ready for shipping today.
Add 4 more and save 25.0%.
About Red Silicone O Rings
Red Silicone O-Rings – High Temp & Food Contact Sealing
Our red silicone o rings are perfect for high-temperature, low-temperature, and food-safe sealing applications. With a wide operating range and excellent flexibility, they’re ideal in both domestic and industrial environments.
Features of Silicone O Rings
- Wide temperature range: –50 °C to +200 °C
- Food & beverage safe (non-toxic, tasteless)
- Steam, ozone & weather resistant
- Soft & flexible – ideal for fragile fittings or brittle plastics
Common Uses
- Espresso machines, ovens & food processing equipment
- Water filtration & home brewing systems
- Steam pipes & autoclaves
- Electronics & lighting gaskets
Sizes & Options
- Metric and BS series o rings available in red silicone
- Standard hardness: 60–70 Shore A
- Need a specific size or colour? Contact us – we may already have it
Silicone vs EPDM vs Nitrile – Quick Comparison
| Feature | Silicone | EPDM | NBR (Nitrile) |
|---|---|---|---|
| Temp Range | –50 °C to +200 °C | –45 °C to +150 °C | –40 °C to +120 °C |
| Water Resistance | Good | Excellent | Good |
| Oil Resistance | Poor | Poor | Good |
| Food Safe | Yes | Some grades | No |
| Flexibility | Excellent | Good | Good |
Why Buy from Selo?
- No minimum order quantity – even for silicone!
- Every O-ring individually packed and measured
- Friendly support & fast UK dispatch
Contact us
Here to help
Got a question we haven’t answered yet? Ask our team. We reply within a day, and good questions become new articles for everyone.