BS011 FKM O Ring - 7.65mm ID x 1.78mm C/S (11.21mm OD)
£0.04 – £0.63 / each
Was
each
total
1958 in stock, ready for shipping today.
Add 4 more and save 33.0%.
FKM (Fluoroelastomer / Viton®) O Rings
376 products
- View specification
6mm ID x 2mm C/S (10mm OD) FKM O Ring
£0.03 – £0.90 / each
Waseach totalView specification1246 in stock, ready for shipping today.
Add 4 more and save 33.0%.
4mm ID x 1.5mm C/S (7mm OD) FKM O Ring
£0.02 – £0.80 / each
Waseach totalView specification1512 in stock, ready for shipping today.
Add 4 more and save 33.0%.
8mm ID x 1.5mm C/S (11mm OD) FKM O Ring
£0.20 – £1.50 / each
Waseach totalView specification363 in stock, ready for shipping today.
Add 4 more and save 25.0%.
31mm ID x 3.5mm C/S (38mm OD) FKM O Ring
£0.23 – £1.50 / each
Waseach totalView specification38 in stock, ready for shipping today.
Add 4 more and save 25.0%.
60mm ID x 3mm C/S (66mm OD) FKM O Ring
£0.66 – £3.68 / each
Waseach totalView specification22 in stock, ready for shipping today.
Add 4 more and save 20.0%.
4mm ID x 2mm C/S (8mm OD) FKM O Ring
£0.03 – £1.00 / each
Waseach totalView specification706 in stock, ready for shipping today.
Add 4 more and save 33.0%.
BS611 FKM O Ring - 8.73mm ID x 1.78mm C/S (12.29mm OD)
£0.15 – £1.49 / each
Waseach totalView specificationOut of stock.
7mm ID x 2mm C/S (11mm OD) FKM O Ring
£0.03 – £1.15 / each
Waseach totalView specification451 in stock, ready for shipping today.
Add 4 more and save 33.0%.
12mm ID x 2.5mm C/S (17mm OD) FKM O Ring
£0.08 – £1.00 / each
Waseach totalView specification605 in stock, ready for shipping today.
Add 4 more and save 25.0%.
14mm ID x 1.5mm C/S (17mm OD) FKM O Ring
£0.05 – £0.81 / each
Waseach totalView specification780 in stock, ready for shipping today.
Add 4 more and save 33.0%.
2.5mm ID x 1.6mm C/S (5.7mm OD) FKM O Ring
£0.10 – £1.20 / each
Waseach totalView specification16 in stock, ready for shipping today.
Add 4 more and save 25.0%.
About FKM (Fluoroelastomer / Viton®) O Rings
Looking for high-performance O-rings that thrive under heat and chemical pressure? FKM O-rings — also commonly known by the brand name Viton® — are your go-to solution for extreme sealing conditions.
What is FKM?
FKM stands for fluoroelastomer, a premium synthetic rubber designed to withstand:
-
Temperatures from –20 °C up to +200 °C (with peaks of 230 °C in some compounds)
-
Chemicals like fuels, oils, acids, and solvents
-
Ozone, UV and weathering over long periods
This makes them ideal for automotive, aerospace, chemical processing, and high-temperature industrial applications.
FKM vs. NBR / Silicone: What's the Difference?
| Feature | FKM (Viton®) | NBR (Nitrile) | Silicone |
|---|---|---|---|
| Temp Range | –20 °C → +200–250 °C | –40 °C → +120 °C | –50 °C → +200 °C |
| Chemical Resistance | Excellent (fuels, oils, solvents) | Moderate | Poor (especially fuels) |
| Ozone/UV Resistance | Excellent | Poor | Excellent |
| Durability / Cost | High durability, higher cost | Budget friendly | Flexible, mid-price |
Not sure what to choose? Get in touch and we’ll help!
Common Uses of FKM O-Rings
-
Fuel injectors & turbo kits
-
Industrial pumps and valves
-
High-performance engines
-
Chemical sealing and lab equipment
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.