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A comparison of silicone and neoprene sponge rubber sheeting

A comparison of silicone and neoprene sponge rubber sheeting

Unsure about the properties of silicone and neoprene sponge rubber sheeting? If you are, this blog might clear things up for you. Here we define each material’s properties and help you to understand where and what they should be used for.


What is Silicone sponge sheet?

We’ll start with silicone. Silicone is a semi-organic synthetic material that is designed to resist extreme temperatures up to 300°C and as low as -55°C. Silicone is an excellent electrical insulator, exhibits fire resistant characteristics and thermal stability; it is a soft, compressible material and is popular for a range of sealing applications. Silicone sponge sheet is, however, highly inert and does not react well with chemicals, particularly oils. Although silicone is the perfect material for heat resistance, it is not suitable for dynamic applications due to its poor tear strength.

What is Neoprene Sponge Rubber Sheet?

Neoprene has been proving its performance for 75 years. It is effective for providing resistance to gasoline, sunlight, ozone and oxidation and has very good air- and water-tight sealing properties. This versatile rubber is the world’s first ever synthetic oil resistant elastomer. Neoprene sponge rubber sheet is commonly used in marine environments, as well as construction and electronics industries, for weather strips, closure seals and shock/noise absorption.

The difference between silicone and neoprene sheeting

The main distinguishing difference between neoprene and silicone sponge sheeting is that silicone is designed to withstand extreme temperatures but is not suitable to be used around oil. Whereas, Neoprene specialises in resisting moisture but is less suitable for high temperatures. Both materials have their obvious strengths and weaknesses, which is why we would always recommend speaking to one of our expert advisers here at Martin’s Rubber to ensure that you select the right material for your application.

For more information about all our silicone and neoprene products here at Martin’s Rubber, please speak to us on +44 (0) 23 8022 6330 or you can email us at [email protected].

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