The DS 85H90AR-HD seat assembly has a heavy duty mechanical suspension with two internal hydraulic shock absorbers and one external hydraulic shock absorber, specifically designed for industrial and construction machinery. The complete suspension is protected from infiltration of foreign matter and water by a rubber boot. The upholstery is of the vacuum formed and poured-in-place type and can be easily exchanged for serviceability. The cushions are available in black PVC vinyl or black cloth. For further information, please contact Darby Manufacturing Ltd.