Material Guide: Chloroprene (Neoprene®) Rubber

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Our Guide To FFKM – FKM – Fluoroelastomer (Viton®)

Fluoroelastomers or Fluorocarbons (FKM), widely known as Viton®, are among the most suitable rubbers for continuous use at temperatures of 200°C and up to 300°C for short periods. Viton® is a registered trademark of The Chemours Company.

Various grades of Fluoroelastomer are available, depending upon which physical properties such as compression set, flexibility (as in diaphragms) or chemical resistance are required. Both copolymers & terpolymers are widely used.

What Are The Advantages Of Fluoroelastomer?

FKM has excellent resistance to ozone and weathering, oils and most chemicals. They can operate under a wide temperature range and are inherently more resistant to burning than other non-fluorinated hydrocarbons. Their good mechanical properties, improving sealing performance, and good compression set makes FKM a popular choice. It is also suitable for operation within environments that require parts to be resistant to explosive decompression.


What Are The Disadvantages Of CR Rubber?

As you may expect from its widespread use for underwater wear, including wetsuits and diving costumes, Neoprene® is water-resistant. However, whilst this is suitable for underwater clothing, Neoprene® also exhibits poor electrical properties. 

Unfortunately, there are certain grades of Neoprene® that may crystallise and harden when they are stored for a long time. Although, thankfully, they will melt on heating to make them easier to process again!

What Are The Typical Applications Of Neoprene?

CR Rubber is widely used in various applications due to its useful properties and reasonable price point. This is why Neoprene suits belting, coated fabrics, cable jackets, seals and gaiters. 

What Is The Typical Working Temperature Of Neoprene?

CR Rubber works in a range of temperatures from -35°C to +100°C.

Looking for more detailed information on the different types of rubbers and polymers we work with? Then check out our material guides where you can find FAQ’s and more guides like this one detailing all you need to know. If you are looking for rubber or polymer products get in touch with DLR Elastomer today via our contact page or via LinkedIn and we can chat over your requirements.


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ACM Rubber

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