Stearic acid, also known as Stoddard Solvent, is a common saturated fatty acid found in many animal and vegetable fats. It is widely used in the cosmetics, pharmaceutical, and food industries as an emulsifier, surfactant, and stabilizer. Common rubber materials, such as nitrile rubber and natural rubber, can be adversely affected when exposed to this chemical. The rubber's physical integrity can be compromised due to the stearic acid's corrosive properties, which can result in cracking, swelling, and discoloration of the rubber. Additionally, the acidic nature of the chemical can break down the rubber's bond with the adhesives that are used to join the rubber to other materials. Ultimately, the rubber's performance and lifespan can be significantly diminished when exposed to stearic acid.
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.
View some of our other material compatibility ratings with STODDARD SOLVENT. 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