TANNIC ACID Resistant O-Rings and Seals

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.


FKM (Viton®)

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.

Common Names: FKM, FPM (Europe), Fluoropolymer, Fluoroelastomer


Here are just a few of the products we have available. Buy online or submit a quote for a fast response.
Recommended Material:
V1000 FKM
Low Temp
-15 °F (-30 °C)
High Temp
400°F (205 °C)
Base Material
FKM (Viton®)
Hardness
75
Color
Black
Attributes
  • General purpose material
Datasheet
Recommended Material:
V1003 FKM
Low Temp
-15 °F (-30 °C)
High Temp
400°F (205 °C)
Base Material
FKM (Viton®)
Hardness
75
Color
Brown
Attributes
  • General purpose material
Datasheet
Recommended Material:
V1007 FKM
Low Temp
-15 °F (-30 °C)
High Temp
400°F (205 °C)
Base Material
FKM (Viton®)
Hardness
90
Color
Black
Attributes
  • For higher pressure applications
Datasheet

Rubber Material Compatibility with TANNIC ACID

View some of our other material compatibility ratings with TANNIC ACID. 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
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