Corrosion of the dynamic surface can cause damage or failure of the radial shaft seal. Elastomers can create an electrochemical reaction in the contact width region when heat and humidity are present. A seal that is idle for long periods is subject to this type of corrosion when temperatures are above 85°F (29°C). The selection of corrosion resistive lubricants can inhibit the corrosion but will not eliminate it. If an electrochemical reaction is a concern, contact ESP Engineering.