Are there any transparent elastomer?

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Gyorgy Banhegyi

In the UV region hardly anything is really transparent. - perhaps fluorelastomers You should specify the necessary transperency (%) in the various ranges (UV, VIS, NIR).

Akihisa Yamaguchi

Thank you for the suggestion.

Some fluoroelastomers are good candidates for a transparent elastomer film. As you said, it is almost transparent even around 200 nm when its thickness is a few hundreds.