Hydrofluoric acid anhydrous (HFA), also known as hydrogen fluoride anhydrous, is a colorless, corrosive, and extremely toxic acid. It is primarily used in the production of fluorocarbons, aluminum smelting, and semiconductor manufacturing.
Common rubber failures associated with exposure to hydrofluoric acid anhydrous are discoloration, cracking, and swelling. The acidic nature of hydrofluoric acid anhydrous can cause discoloration in some rubber materials, as the acid can easily penetrate the material. Cracking can occur due to the acid breaking down the rubber’s molecular structure, causing the rubber to become brittle and prone to breakage. Swelling can also occur when the acid migrates into the rubber, causing the rubber to expand and become less resistant to stress.
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View some of our other material compatibility ratings with HYDROFLUORIC ACID, ANHYDROUS. If you don't see what you're looking for or need more guidance, our team of experienced sealing design engineers can help select the best sealing products and material for your specific application.View Full Chemical Compatibility Guide