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Gelest DES-T12

Gelest POLYDIETHYLSILOXANE, TRIETHYLSILOXY TERMINATED, 15-20 cSt (DES-T12) has excellent lubricity. This product functions as a compatibilizer.

Functions: Compatibilizer

Chemical Family: Silicones

Features: Excellent Lubricity

Safety Data Sheet
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Identification & Functionality

Chemical Family
Chemical Name
Fluids & Lubricants Functions
Chemical Structure

Features & Benefits

Fluids & Lubricants Features
Product Highlights

Polydiethylsiloxanes offer improved metal-metal lubrication and low temperature properties when compared to polydimethylsiloxanes. They are oxidatively stable to 150°C and thermally stable under inert atmospheres to 225°C. These fluids are often used in low temperature aerospace hydraulics or as performance addine to synthetic hydrocarbons.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Molecular Weight400 - 500g/mol-
Flash Point125.0°C-
Refractive Index (at 20°C)1.439--
Viscosity (at 25°C)15 - 20cSt-
Pour Point-110.0°C-
Density0.93g/ml-
Surface Tension25 - 28dynes/cm-
Viscosity Temperature Coefficient0.77--
Thermal Properties
ValueUnitsTest Method / Conditions
Thermal Conductivity3.296W/m°C-
Glass Transistion Temperature (Tg)-139.0°C-
Specific Heat (at 20-100°C)0.40 - 0.47cal/mole/°C-
Electrical Properties
ValueUnitsTest Method / Conditions
Volume Resistivity (at 20°C)10¹³ - 10¹⁴ohm-cm-

Regulatory & Compliance

Packaging & Availability

Standard Packaging

100 g

Packaging Under

Nitrogen