3.4mm ID x 1.3mm C/S (6mm OD) FKM O Ring
£0.10 – £1.25 / each
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each
total
390 in stock, ready for shipping today.
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FKM (Fluoroelastomer / Viton®) O Rings
376 products
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BS013 FKM O Ring - 10.82mm ID x 1.78mm C/S (14.38mm OD)
£0.03 – £1.00 / each
Waseach totalView specification65 in stock, ready for shipping today.
Add 4 more and save 33.0%.
BS016 FKM O Ring - 15.6mm ID x 1.78mm C/S (19.16mm OD)
£0.05 – £0.83 / each
Waseach totalView specification108 in stock, ready for shipping today.
Add 4 more and save 33.0%.
BS119 FKM O Ring - 23.47mm ID x 2.62mm C/S (28.71mm OD)
£0.12 – £1.23 / each
Waseach totalView specification70 in stock, ready for shipping today.
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BS613 FKM O Ring - 9.93mm ID x 2.62mm C/S (15.17mm OD)
£0.23 – £1.80 / each
Waseach totalView specification85 in stock, ready for shipping today.
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54mm ID x 2mm C/S (58mm OD) FKM O Ring
£0.23 – £1.50 / each
Waseach totalView specification23 in stock, ready for shipping today.
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38mm ID x 3.5mm C/S (45mm OD) FKM O Ring
£0.47 – £2.61 / each
Waseach totalView specification84 in stock, ready for shipping today.
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BS842 FKM O Ring - 68.26mm ID x 3.53mm C/S (75.32mm OD)
£0.81 – £4.05 / each
Waseach totalView specification18 in stock, ready for shipping today.
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52mm ID x 3mm C/S (58mm OD) FKM O Ring
£0.32 – £2.15 / each
Waseach totalView specification66 in stock, ready for shipping today.
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27.6mm ID x 2.4mm C/S (32.4mm OD) FKM O Ring
£0.23 – £1.80 / each
Waseach totalView specification27 in stock, ready for shipping today.
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190mm ID x 3mm C/S (196mm OD) FKM O Ring
£1.35 – £6.75 / each
Waseach totalView specification200 in stock, ready for shipping today.
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73mm ID x 2.5mm C/S (78mm OD) FKM O Ring
£1.02 – £5.10 / each
Waseach totalView specification98 in stock, ready for shipping today.
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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:
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Temperatures from –20 °C up to +200 °C (with peaks of 230 °C in some compounds)
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Chemicals like fuels, oils, acids, and solvents
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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
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Fuel injectors & turbo kits
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Industrial pumps and valves
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High-performance engines
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Chemical sealing and lab equipment
Contact us
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