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CAS 63148-62-9 olydimethylsiloxane

uHV-A Ultra-High Viscosity A 300,000 - 800,000 cst PDMS

The UHV-A Series features ultra-high viscosity polydimethylsiloxane (PDMS) fluids, engineered for demanding industrial applications requiring exceptional thermal stability, lubrication, and dielectric

Introduction

The Silico® UHV-A Series features ultra-high viscosity polydimethylsiloxane (PDMS) silicone oils, engineered to deliver exceptional mechanical damping, thermal stability, and long-term reliability across demanding industrial and electronic applications. With viscosities ranging from 300,000 cSt to 800,000 cSt, these silicone fluids exhibit low volatility, excellent dielectric properties, and resistance to oxidation.

Formulated for critical applications such as vibration isolation, thermal interface materials (TIMs), and high-performance lubricants, the UHV-A Series supports consistent operation under wide temperature ranges and shear stress conditions.

Typical Physical Properties

Property MF2010-300000 MF2010-800000
Viscosity @ 25°C (cSt) 300,000 800,000
Appearance Clear, colorless fluid
Flash Point (°C) >300
Ignition Point (°C) >400
Pour Point (°C) -50
Specific Gravity @ 25°C 0.970
Surface Tension (mN/m) 21.3
Refractive Index @ 25°C 1.403
CAS Number 63148-62-9
Key Features High shear & thermal stability, low volatility Superior vibration damping, minimal evaporation loss
Main Applications Mold release, damping fluids, insulating media TIMs, vibration control, cosmetic carriers, high-viscosity lubricants

Performance Features of the UHV-A Series

🔹 Ultra-High Viscosity PDMS: Delivers controlled flow and excellent damping characteristics in precision systems.

🔹 Exceptional Thermal Stability: Performs reliably in high-temperature environments without degradation.

🔹 Inert and Non-Corrosive: Chemically stable and safe for use with plastics, elastomers, and metals.

🔹 Low Volatility and High Purity: Maintains viscosity and consistency under extended operational cycles.

🔹 Dielectric Strength: Ideal for electrical insulation in sensitive electronic or electromechanical devices.

Primary Applications

These ultra-high viscosity silicone oils are well-suited for industries including automotive, aerospace, electronics, and mechanical manufacturing.

  • Vibration Damping & Shock Absorption: Effective in precision instruments and electromechanical systems.

  • High-Temperature Lubrication: Ideal for O-rings, valves, gaskets, and sliding components.

  • Heat Transfer Fluids: Used in closed-loop systems that require both thermal stability and high viscosity.

  • Release Agent for Molded Parts: Compatible with injection molding processes involving rubber or plastic.

Why Choose Silico® UHV-A Series Silicone Fluids?

The Silico® UHV-A Series offers optimized flow behavior, exceptional resistance to oxidation, and broad compatibility across substrates. These ultra-high viscosity silicone fluids are engineered to deliver high-performance results in critical and long-life applications.


For technical datasheets or bulk pricing of Silico® MF2010-300,000 and Silico® MF2010-800,000, contact us at Silicorex.com or speak directly with our product specialists.

Packaging and Storage

Item Description
Packaging 180kg steel drum or 900kg IBC tote
Shelf Life 24 months in original unopened packaging
Storage Conditions Ambient temperature, no freezing restrictions

Important Notes

For detailed technical information, safety data sheets (MSDS), or formulation guidance, please contact info@silicorex.com. Technical PDFs and chemical structure data are available upon request.

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