Polyalkylene Glycol (PAG) is a synthetic industrial gear oil formulated on polyalkylene glycol (PAG) base stock. It is offered in ISO VG 150, ISO VG 220, ISO VG 320.
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Grades & published data
Typical values from the product data sheet, each with its test method.
| Property | ISO VG 150 | ISO VG 220 | ISO VG 320 | Method |
|---|---|---|---|---|
| Kinematic viscosity at 40 °CcSt | 150 | 221 | 324 | ASTM D445 |
| Kinematic viscosity at 100 °CcSt | 21.5 | 43.8 | 64.6 | ASTM D445 |
| Viscosity index | 246 | 253 | 256 | ASTM D2270 |
| Pour point°C | -45 | -42 | -36 | ASTM D97 |
| Flash point (Cleveland open cup)°C | 270 | 274 | 274 | ASTM D92 |
| Density at 15 °Cg/cm³ | 1.000 | 1.006 | 1.008 | ASTM D4052 |
| Foaming, Sequence I (24 °C)ml/ml | 5/0 | 5/0 | 5/0 | ASTM D892 |
| Foaming, Sequence II (93.5 °C)ml/ml | 10/0 | 10/0 | 10/0 | ASTM D892 |
| Foaming, Sequence III (24 °C after 93.5 °C)ml/ml | 5/0 | 5/0 | 5/0 | ASTM D892 |
| Four-ball weld loadkgf | 280 | 280 | 280 | ASTM D2783 |
Overview
Polyalkylene Glycol (PAG) is a synthetic industrial gear oil formulated on polyalkylene glycol (PAG) base stock. It is offered in ISO VG 150, ISO VG 220, ISO VG 320.
The specification table lists, for each grade, kinematic viscosity at 40 °C and 100 °C, viscosity index, pour point, flash point and four-ball weld load, each with its test method. Share operating conditions with our technical team to confirm the grade before supply.
Application
Gear units whose manufacturer calls for a PAG-based gear oil. PAG oils are a distinct chemistry; confirm miscibility and seal compatibility before changing over.
Feature
ISO VG 150: KV40 150 cSt, KV100 21.5 cSt, VI 246, pour point -45 °C; ISO VG 220: KV40 221 cSt, KV100 43.8 cSt, VI 253, pour point -42 °C; ISO VG 320: KV40 324 cSt, KV100 64.6 cSt, VI 256, pour point -36 °C.
Feature
Published kinematic viscosity at 40 °C sits inside the ISO 3448 tolerance (mid-point ±10 %) for ISO VG 150 (150 cSt); ISO VG 220 (221 cSt); ISO VG 320 (324 cSt).
Feature
Besides viscosity, the published data includes four-ball weld load, flash point (COC) and foaming tendency.
Start from the equipment manufacturer's viscosity recommendation at operating temperature. The ISO VG number is the mid-point kinematic viscosity at 40 °C (ISO 3448), and each grade's published values are listed separately.
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.
