The WDL Wiper is a Double Lip Wiper with a steel casing, enabling an open groove installation. The Inner Lip retains the thin fi lm of Hydraulic Oil allowed to sneak through by the Primary/Secondary Seals, whereas the Outer Lip checks the entry of debris/solid particles entering into the system, protecting the Sealing System as well as other internal components. Highly recommended as a Wiper Seal in highly demanding applications like Off -Road Equipment Cylinders, Material Handling Equipment Cylinders etc.