Fluid Recommendations: Oil Viscosity, Cleanliness & Temperature
Oil viscosity, cleanliness and temperature are all important to properly functioning hydraulic systems, and keeping these oil specifications in mind will ensure optimal, efficient system operation.
Fluid Viscosity Recommendations
2,8 to 380 cst or 35 to 2000 SUS
Fluid Cleanliness Recommendations
Specified in accordance with ISO 4406:1999; 4 µm/6 µm/14 µm
Electrohydraulic cartridge valves: 15/13/11
All other cartridge valves: 19/17/14
Fluid Temperature Recommendations
Cartridge Seal Material N:
Buna N (Nitrile) -22 to 230° F (-30 to 110° C)
Cartridge Seal Material V:
Fluorocarbon Rubber FKM (Viton®, product of DuPont) -10 to 250° F (-20 to 120° C)
Cartridge Seal Material E:
EPDM (Ethylene Propylene Diene Monomer) -70 to 250° F (-60 to 120° C)
See our Performance Data page for information regarding fluids used in testing Sun cartridges.