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Gelest PDM-0821

Gelest DIPHENYLSILOXANE-DIMETHYLSILOXANE COPOLYMER, 100-125 cSt (PDM-0821) has good damping properties. This product is used in bearings, gears, and optical applications.

Chemical Family: Silicones

Product Type: Coolant, Dielectric Fluid, Grease, Heat Transfer Fluid, Hydraulic Fluids, Lubricant

Application Area: Bearings, Gears, Optical Applications

Features: Good Damping

Safety Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Chemical Structure

Features & Benefits

Ready-to-Use Product Features

Applications & Uses

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Density0.99g/ml
Pour Point-70.0°C
Refractive Index (at 20°C)1.436
Viscosity (at 25°C)100 - 125cSt
Viscosity (at 99°C)30 - 32cSt
Viscosity Temperature Coefficient0.63
Specific Gravity0.99
Surface Tension22.8mN/m
Dielectric Constant2.78F/m
Flash Point280.0°C
Ignition Temperature484.0°C
Comonomer Mole7 - 10%
Molecular Weight2,800 - 3,200g/mol
Thermal Properties
ValueUnitsTest Method / Conditions
Gel Time (250°C in air)1200 - 1500hours

Regulatory & Compliance

Chemical Inventories

Technical Details & Test Data

Technical Details

The thermal silicone fluids are described in chemical notation as aromatic siloxanes because of the presence of phenyl groups. High phenyl content fluids are utilized as heat-exchange fluids, dielectric coolants, impregnants for sintered metal bearing, and base oils for high temperature fluids. Low phenyl content fluids are utilized at lower temperatures than high phenylsilicones and find extended temperature service applications as lubricating oils for critical devices such as timers and systems involving rubber, plastic and aluminum mating surfaces. For more information click here.

Packaging & Availability

Standard Packaging
  • 100 g
  • 1 kg
  • 10 kg
  • 200 kg