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Kato Main Valve Seal Kit HD550 HD550-7 - Image 1
Kato Main Valve Seal Kit HD550 HD550-7 - Image 2
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Kato Main Valve Seal Kit HD550 HD550-7


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Kit TypeMain Control Valve Seal Kit
MaterialNBR, PTFE, HNBR
Operating Pressure34.3 MPa
Operating Temperature Range-25 to 120 °C
Sealing MediumMineral-based Hydraulic Oil
ApplicationsHydraulic Main Valve Assembly
Manufacturer No.
ESY50547JDPART
Engine Part No.
Mitsubishi 6D31TMitsubishi 6DS70
Interchange No.
ESY50547
Fitment Vehicles
Kato HD550Kato HD550-7Kato HD550SEVKato HD550-1Kato HD550VII

Hydraulic Systems - Industrial Encyclopedia

Aftermarket main control valve seal kit compatible with Kato HD550 and HD550-7 hydraulic excavators. Restores hydraulic sealing performance for main valve assembly.