Parylene Coating For Rubber/silicone

https://www.mg-parylene.com/Rubber-Silicone.html

Function: Dry lubrication, isolation, no sticking to each other, no fiber and dirt, no mark, no surface damage. Parylene can protect the product from oil, dirt and pollutants and improve lubricity. Coating prevents the by-products in the elastomer component from eluting and protects the surface of the product from the influence of organic solvents and inorganic reagents, acids and solutions.