The DanaStep secondary seal is designed with the well-known profile that enables the seal to draw liquid back into the system. With two Dana Steps in tandem combined with a double wiper, there is zero leakage in almost any application. The radius of the rear of the seal secures optimal form stability.
A combination with DanaFlon compounds with maximum form stability provides the best possible safety. The DanaFlon materials are chemically resistant to all hydraulic media and the O-ring material can be chosen so that the seal is unaffected by the media.