Viton Oil Seals: page 8
For shafts exposed to fuels or aggressive chemicals, Viton (FKM) is usually the premium choice, selected when other materials would quickly fail under the combined effects of temperature and the chemical environment. You’ll find it in the Hydraulic Seals Store alongside NBR and silicone, for more demanding applications in the automotive, energy or chemical industries.
Why choose Viton (FKM) seals: superior thermal and chemical resistance
FKM performs much better than NBR when in prolonged contact with fuels, synthetic oils and various industrial solvents – which is why it is preferred where the chemical environment is harsh and frequent replacement of the seal would be costly or risky for the operation of the equipment.
Performance in high-temperature and fuel applications
It remains elastic at temperatures well above those tolerated by NBR, making it suitable for engines, fuel systems and hydraulic systems operating under demanding thermal conditions, sometimes for long periods of continuous operation, without rapidly losing its sealing ability. Furthermore, Viton withstands contact with numerous fuels, oils and chemicals commonly found in industrial environments.
How to choose the right dimensions for a Viton oil seal
As with any seal, you will need the shaft diameter, the outer diameter and the width of the seal. For high-pressure or high-temperature applications, also check the lip type and compatibility with the working fluid to avoid a choice that would artificially reduce the part’s service life. It is also worth checking the condition of the shaft surface, as scratches or wear can affect the seal even if the seal size is correct.
The benefits of buying Viton oil seals from Hydraulic Seals Store
We stock Viton oil seals tested for demanding industrial applications, with a full technical data sheet available for every size in our catalogue. Delivery is fast, and our prices remain competitive compared with similar parts on the market.
FAQ
Up to what temperature can Viton seals withstand?
Typically up to around 200–230°C – well above what NBR can withstand, which is why it is chosen for applications involving high temperatures and repeated thermal cycles.
What are the main advantages of Viton seals?
Superior resistance to temperature, fuels and numerous chemicals – and, consequently, a longer service life in demanding applications than standard materials.
How does Viton differ from standard NBR rubber?
It withstands much harsher conditions, but it also costs more – which is why it is chosen for specialised applications, rather than as a standard solution for any rotating seal.
How does pressure affect the service life of a Viton seal?
High pressure accelerates wear on the sealing lip, so choosing the correct size and type directly affects how long the part will last in service.