ISO VG 68 is a hydraulic oil in the ISO VG 68 viscosity grade. Under ISO 3448, ISO VG 68 means a kinematic viscosity of 61.2 to 74.8 cSt at 40 °C; the published value for this product is 68 cSt.
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Grades & published data
Typical values from the product data sheet, each with its test method.
| Property | Value | Method |
|---|---|---|
| Kinematic viscosity at 40 °CcSt | 68 | ASTM D445 |
| Kinematic viscosity at 100 °CcSt | 8.5 | ASTM D445 |
| Viscosity index | 95 | ASTM D2270 |
| Pour point°C | -6 | ASTM D97 |
| Flash point (open cup)°C | 218 | ASTM D92 |
| Density at 15 °C | 0.880 | ASTM D4052 |
Overview
ISO VG 68 is a hydraulic oil in the ISO VG 68 viscosity grade. Under ISO 3448, ISO VG 68 means a kinematic viscosity of 61.2 to 74.8 cSt at 40 °C; the published value for this product is 68 cSt.
The specification table also lists viscosity at 100 °C (8.5 cSt), viscosity index 95, pour point -6 °C, flash point 218 °C and density, each with its test method.
Application
Pumps and circuits whose manufacturer specifies ISO VG 68 at the system's operating temperature.
Feature
KV40 of 68 cSt is inside the ISO VG 68 band (61.2–74.8 cSt).
Feature
KV100 8.5 cSt, VI 95, pour point -6 °C, flash point 218 °C.
Use the viscosity range in the pump manufacturer's documentation at your operating temperature. Lower grades suit colder conditions or high-speed pumps; higher grades suit higher temperatures and loads.
Next step
The range above is what we publish. Formulation to a customer brief is a route of its own, and a sample is the first stage of it.
