Tannic Acid, also known as Gallotannic Acid, is a natural polyphenol found in certain plants and is used in a variety of industries including food and beverage processing, pharmaceuticals, and leather tanning. Common uses for tannic acid include aiding in the tanning process for leather, flavoring food and beverages, and as an astringent in pharmaceutical preparations.
When exposed to tannic acid, rubber materials can experience a variety of failures. The most common failure is a decrease in elasticity and strength, which can lead to stretching, cracking, and hardening of the rubber. Additionally, tannic acid may cause discoloration of the rubber, leading to a reduced aesthetic appearance.
Viton ® o-rings from Marco Rubber offer excellent compatibility with a range of chemicals, oils and resist high temperatures up to 400F. Viton ® is also known as FKM made of fluoroelastomer one of the most versatile and widely used sealing materials.
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