22mm ID x 2.5mm C/S (27mm OD) FKM O Ring
£0.16 – £1.55 / each
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each
total
437 in stock, ready for shipping today.
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FKM (Fluoroelastomer / Viton®) O Rings
376 products
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31mm ID x 3mm C/S (37mm OD) FKM O Ring
£0.28 – £1.84 / each
Waseach totalView specification73 in stock, ready for shipping today.
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34mm ID x 4mm C/S (42mm OD) FKM O Ring
£0.42 – £2.33 / each
Waseach totalView specification87 in stock, ready for shipping today.
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BS809 FKM O Ring - 15.88mm ID x 2.62mm C/S (21.12mm OD)
£0.12 – £1.23 / each
Waseach totalView specification89 in stock, ready for shipping today.
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16.3mm ID x 2.4mm C/S (21.1mm OD) FKM O Ring
£0.29 – £1.90 / each
Waseach totalView specification44 in stock, ready for shipping today.
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105mm ID x 4mm C/S (113mm OD) FKM O Ring
£1.52 – £7.60 / each
Waseach totalView specification19 in stock, ready for shipping today.
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10.5mm ID x 2mm C/S (14.5mm OD) FKM O Ring
£0.14 – £1.40 / each
Waseach totalView specification168 in stock, ready for shipping today.
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13.5mm ID x 2mm C/S (17.5mm OD) FKM O Ring
£0.14 – £1.40 / each
Waseach totalView specification188 in stock, ready for shipping today.
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9mm ID x 1mm C/S (11mm OD) FKM O Ring
£0.03 – £1.00 / each
Waseach totalView specification2046 in stock, ready for shipping today.
Add 4 more and save 33.0%.
28mm ID x 1.5mm C/S (31mm OD) FKM O Ring
£0.17 – £1.67 / each
Waseach totalView specification511 in stock, ready for shipping today.
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45mm ID x 2mm C/S (49mm OD) FKM O Ring
£0.20 – £1.50 / each
Waseach totalView specification538 in stock, ready for shipping today.
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12mm ID x 1.5mm C/S (15mm OD) FKM O Ring
£0.05 – £0.75 / each
Waseach totalView specification36 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
Here to help
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