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Piston seal ODU OD=20-70 mm ODXIDXHigh Hydraulic piston U-ring type single acting NBR U Cup seal BUFFER RUBBER NITRILERING - AliExpress
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Hydraulic Cylinder Piston Oil Seal O Ring Glyd Ring 39*31.5*3.2 - China Hydraulic Seal, O Ring | Made-in-China.com
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ID 40mm/42mm/45mm UN/UHS/UNS Y Type Ring Polyurethane (PU) Hydraulic Oil Seal Cylinder Piston Sealing Ring Gasket OD 48mm-70mm (Color : 40x60x10mm, Size : 2Pcs): Amazon.com: Industrial & Scientific
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