PriolubeTM EF 3221 is a fully synthetic dielectric ester base oil. It has excellent thermal properties to optimize cooling performance in systems where direct or indirect cooling of electrical components is required. Priolube EF 3221 is suitable for blending into both PAO and mineral oil formulations, helping the formulator achieve superior safety and performance. Priolube EF 3221 is also suitable for formulating EV transmission and gearbox oil fluids.
The value we bring
Very low viscosity
High thermal conductivity
Oxidatively stable
Biodegradable*
Features and main specifications
Features & benefits
| Feature | Benefit |
|---|---|
| Compatible with many standard automotive elastomers | Formulated with existing engineering solutions |
| High breakdown voltage | Create formulations that have the required electric performance characteristics |
| No halogenated materials intentionally added | There is global scrutiny of products containing halogenated materials |
| Readily biodegradable | Allows the formulator to create biodegradable fluids |
| Hydrolytically stable | Will not break down in the presence of water |
| Low NOACK volatility | Low evaporative loss, even at elevated temperatures |
| Oxidatively stable | Improved fluid lifetime |
| High flash point | Create formulations with higher flash points for applications that require elevated temperatures |
| High thermal conductivity | Good heat removal properties |
| Low viscosity | Low churning and pumping losses |
Main specifications
| Property | Value |
|---|---|
| Kinematic viscosity at 40°C | 7.7 cSt |
| Kinematic viscosity at 100°C | 2.4 cSt |
| Viscosity index | 141 |
| Flash point (COC) | 203°C |
| NOACK volatility at 200°C | 6% |
Explore our other synthetic esters for EV applications
Priolube™ EF 7010
Our most advanced EV-specific ester base oil creates high-performance, high-efficiency transmission, gearbox and e-axle lubricants without compromising elastomer compatibility even at high inclusion rates. (Kinematic viscosity at 100º C:2.9 cSt)
Priolube™ EF 3446
Our low-viscosity, fully synthetic dielectric ester base oil improves efficiency in EV transmission and e-axle lubricants. Compatible with Group III and Group IV oils, industry-standard elastomers and copper. (Kinematic viscosity at 100º C:2.0 cSt)
From a world leader in ester base oils
As the world moves to an electrified future, we are developing innovative, novel products to address the needs of future mobility. With over 40 years of lubricant formulation expertise, we are ready to discuss your formulation requirements and can support your technical development work wherever you are. We look forward to speaking to you.
*Based on OECD 301F