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Conditions of use Temperature: -100 °C ... +200 °C Speed: ≤15 m/s Liquids: mineral oil-based hydraulic fluids, water emulsions Compressive strength for material: 20 °C ≤ 12 N/mm², 100 °C ≤ 7.5 N/mm² Materials Filled PTFE PO-52 = bronze-reinforced modified PTFE (PO-55) PO-30 = carbon-reinforced modified PTFE. Advantages - Supplied as ribbon or pre-cut - Low friction - No stick-slip phenomenon Calculation of radial load FR = (D x L x q / v) x n FR= maximum radial load (N) q = maximum allowed radial load for the material (N/mm²) D x W = diameter x width mm² n = number of rings v = safety factor (recommendation > 3) Installation Mounted in a single groove. It is recommended to use the same clearance S as with Parker shaft and piston seals. The gap depends on H and the operating pressure. Tape length Tape length A = x B - M - Gap M from the table - B = average diameter of the guide ring - for the piston B = øH - L - for the shaft B = øH + L - L = groove depth