Want to learn more? Read “Oil Seals 101, Part 2”.
If you require any assistance in discovering the factors that lead to the right oil seal choices, the Simply Seals Team is happy to assist you!
VMQ, also known as silicone, is also used for oil seals, but this is less common because the mechanical strength of VMQ is low and this material has poor wear-resistance This makes it less suitable for dynamic applications, but it can withstand fairly low and high temperatures from -60 °C to 200 °C. Many types of VMQ are also suitable for contact with pharmaceutical and food products, so VMQ is an option worth considering. VMQ oil seals are usually available on request.
The material of the sealing lip is chosen according to the liquid to be sealed and the rotational speed. For larger shafts, an NBR sealing lip can cope with surface speeds of up to 10-12 m/s, while an FKM lip is suitable for speeds of up to 35-38 m/s.
EPDM
Another important factor to consider is the temperature range in which the gasket will be used. Natural rubber gaskets have a broad temperature range, but it is crucial to select a gasket material that can withstand the specific temperature extremes of your application without losing its sealing properties.
For more detailed information, please see the following:
Among the most common causes of oil seal failure are:

The sealing element, also known as the sealing lip, forms the interior of the oil seal. Various materials can make up the lip depending on the application’s specific needs. Below are some commonly used materials: