Constructed from premium high-density NBR, this DK seal delivers exceptional resistance to petroleum-based hydraulic oils, mineral grease, and mechanical wear. The elastomeric compound maintains high tensile strength and compression set resistance across working temperatures from -30℃ up to 120℃. For elevated thermal environments or aggressive synthetic lubricants, FKM options are available to extend dynamic service life up to 220℃. The robust material formulation minimizes lip hardening and micro-cracking, preserving seal flexibility under intense dynamic pressures.

To achieve maximum service life, ensure the shaft surface is polished (recommended roughness and chamfered prior to press-fitting. Apply a light coating of clean hydraulic grease to both the main sealing lip and dust lip to prevent dry running during initial startup. Use a uniform press tool to seat the seal straight into the housing bore, avoiding tilted installation that could distort the inner spring ring. Proper alignment reduces frictional heat generation, protects shaft journals from grooving, and guarantees extended, leak-free operation in heavy industrial machinery.