Indole, also known as benzopyrrole, is a heterocyclic aromatic compound commonly used in the production of dyes, drugs, and fragrances. It is also used in the manufacture of plastics, pesticides, and rubber.
When rubber is exposed to indole, chemical attack on the rubber can occur. This can lead to cracking, distortion, discoloration and a decrease in the physical properties of the rubber. Exposure to indole can also cause rubber to swell, leading to a decrease in elasticity, hardness and flexibility. In some cases, the rubber may become brittle and break.
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 INDUSTRON FF44. 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