Look up chemical compatibility ratings for 18 common elastomer types — including Nitrile (NBR), EPDM, FKM (Viton), FFKM (Kalrez), Neoprene, Silicone, and more — against hundreds of chemicals, fluids, and compounds from Parker's O-Ring Chemical Compatibility Guide.

Ratings range from 1 (Satisfactory) to 4 (Unsatisfactory); x indicates insufficient data. See the legend at left for the full scale. Search by compound name to filter the table. Hover over a column header to see the full elastomer name.