2 1/4" Piston Cup for Kerr KM-260-225RD (SKU:KM-260-225RD), Resilon® polyurethane with metal core, vulcanized一体成型(ASTM D2000-22), salt spray tested ≥1200hrs corrosion-free, API 7K compliant, dynamic sealing pressure ≥30MPa, compatible with FMC/Emsco high-pressure pumps.
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