BS112 FKM O Ring - 12.37mm ID x 2.62mm C/S (17.61mm OD)
£0.08 – £1.00 / each
Was
each
total
108 in stock, ready for shipping today.
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FKM (Fluoroelastomer / Viton®) O Rings
376 products
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BS020 FKM O Ring - 21.95mm ID x 1.78mm C/S (25.51mm OD)
£0.08 – £1.00 / each
Waseach totalView specification637 in stock, ready for shipping today.
Add 4 more and save 25.0%.
BS009 FKM O Ring - 5.28mm ID x 1.78mm C/S (8.84mm OD)
£0.04 – £1.20 / each
Waseach totalView specification2760 in stock, ready for shipping today.
Add 4 more and save 33.0%.
BS008 FKM O Ring - 4.47mm ID x 1.78mm C/S (8.03mm OD)
£0.03 – £1.00 / each
Waseach totalView specification4 in stock, ready for shipping today.
Add 4 more and save 33.0%.
BS007 FKM O Ring - 3.68mm ID x 1.78mm C/S (7.24mm OD)
£0.02 – £0.50 / each
Waseach totalView specification86 in stock, ready for shipping today.
Add 4 more and save 33.0%.
BS006 FKM O Ring - 2.9mm ID x 1.78mm C/S (6.46mm OD)
£0.03 – £1.00 / each
Waseach totalView specification40 in stock, ready for shipping today.
Add 4 more and save 33.0%.
BS003 FKM O Ring - 1.42mm ID x 1.52mm C/S (4.46mm OD)
£0.02 – £0.50 / each
Waseach totalView specification718 in stock, ready for shipping today.
Add 4 more and save 33.0%.
9mm ID x 2.5mm C/S (14mm OD) FKM O Ring
£0.05 – £0.75 / each
Waseach totalView specification608 in stock, ready for shipping today.
Add 4 more and save 33.0%.
9mm ID x 1.8mm C/S (12.6mm OD) FKM O Ring
£0.03 – £1.00 / each
Waseach totalView specification152 in stock, ready for shipping today.
Add 4 more and save 33.0%.
9.5mm ID x 1.5mm C/S (12.5mm OD) FKM O Ring
£0.03 – £1.00 / each
Waseach totalView specification243 in stock, ready for shipping today.
Add 4 more and save 33.0%.
8mm ID x 3.5mm C/S (15mm OD) FKM O Ring
£0.11 – £1.36 / each
Waseach totalView specification870 in stock, ready for shipping today.
Add 4 more and save 25.0%.
8mm ID x 1mm C/S (10mm OD) FKM O Ring
£0.02 – £0.50 / each
Waseach totalView specification438 in stock, ready for shipping today.
Add 4 more and save 33.0%.
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:
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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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