For incorporation into pure oils and fats including mineral oil, synthetic oil and vegetable oil, the recommended viscosity range at 25°C is 350–1000 cSt, among which 500 cSt is the most widely used. Choose 1000 cSt for superior lubrication and anti-wear performance, while 350 cSt works better for viscosity reduction and improved fluidity.
Recommended Viscosity & Performance
- 350 cSt: It features great versatility and excellent compatibility with pure oils and fats. It achieves balanced effects on viscosity reduction, fluidity and defoaming, and is suitable for low-temperature and low-viscosity base oils.
- 500 cSt (First Choice): It delivers the best overall performance with reliable lubrication, sealing and anti-migration capabilities, fitting for most pure oil and fat systems.
- 1000 cSt: It forms a strong oil film, provides outstanding anti-wear property and low volatility, making it ideal for high-temperature, heavy-duty and high-viscosity base oils.
- Viscosity ≤ 100 cSt: This grade is only applicable to rapid defoaming, ultra-low temperature and ultra-low viscosity base oils. It tends to migrate easily and forms weak oil film, so it is not suggested for regular lubrication scenarios.
- Viscosity ≥ 5000 cSt: Products in this range are liable to delaminate and hard to disperse. They are merely used for high-viscosity damping and sealing, and shall be applied with caution in pure oils and fats.
Dosage & Compatibility
The typical addition amount is 0.5%–5%. The dosage is controlled at 1%–3% for lubrication purposes and 0.1%–1% for defoaming.
Dimethyl silicone oil shows good compatibility with non-polar pure oils and fats such as mineral oil and synthetic hydrocarbons. A preliminary compatibility test is necessary before using it with polar oils like esters and polyethers to avoid delamination.
Quick Selection Table
| Application Purpose | Recommended Viscosity (cSt) |
|---|---|
| General lubrication, defoaming & leveling | 500 |
| Low temperature service, viscosity reduction & rapid dispersion | 350 |
| High temperature, heavy load, anti-wear & sealing | 1000 |
| Rapid defoaming & ultra-low viscosity base oil | 50–100 |
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