Viton,FKM:chemical stability,with the best medium resistance in the elastomer,excellent anti-aging performance Fluoro rubber:chemical stability,with the best medium resistance in the elastomer,excellent anti-aging performance, ozone resistance, high temperature bearing,best oil-proof and chemical corrosion.acid and alkali resistance(20)HCL36%H2SO498%HNO50%H3PO4100%NaOH85% SIZENAME Width ...