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Acetal piston guide rings Operating conditions Temperature: -30°C ...+110°C Speed:= 1 m/s Fluids: Hydraulic fluids (mineral oil based), water emulsions Compression strength: 20°C=130 N/mm² / 100°C=40 N/mm² Material: Acetal plastic Installation The guide ring is stretched open when assembled into the groove Advantages - Easy to assembly and manufacturing of the sealing groove - High mechanical durability - Low static and dynamic friction (friction coefficient 0,05-0,1 on a lubricated steel surface) - Wide dimension range Calculating radial load FR = (D x L x q / v )x n FR= maximum radial load (N) q = compression strength at operating temperature for the given compound (N/mm) D x L = diameter x seal width (mm) n = number of rings v = confidence coefficient (recommendation> 3)