COPPER GLUCONATE Resistant O-Rings and Seals

Copper Gluconate is also known as gluconic acid copper salt, and is commonly used in the food and beverage industry as a preservative, a dietary supplement and an antioxidant. In other industries, it is used in the production of pigments and catalysts.

When rubber is exposed to copper gluconate, some of the common types of failure that can occur include corrosion, discoloration and embrittlement. Corrosion occurs when the copper gluconate molecules break down the rubber material, leading to cracking and a decrease in elasticity or strength. Discoloration is caused by the copper gluconate molecules forming a thin, insoluble layer on the surface of the rubber, leading to a decrease in flexibility and strength. Embrittlement is caused by the copper gluconate molecules forming an insoluble layer on the surface of the rubber, resulting in a decrease in flexibility and strength.