PROPIONITRILE Resistant O-Rings and Seals

Propionitrile, also known as propanenitrile or methylacetonitrile, is a colorless, volatile liquid with a pungent odor. It is used as a solvent in some industrial applications and as an intermediate in the production of other compounds. It is also used in chemical reactions involving the production of acrylonitrile, a monomer used in the production of synthetic fibers.

Common types of failure when rubber is exposed to propionitrile include swelling, cracking, and embrittlement. Rubber exposed to propionitrile can become soft and swell, leading to increased permeation of the compound and decreased tensile strength. Additionally, some forms of rubber may become brittle and crack when exposed to propionitrile resulting in a decrease in its mechanical properties. Additionally, some forms of rubber may become tacky or discolored when exposed to propionitrile, resulting in a decrease in its aesthetic appeal.