Dimethyl Silicone Oil

RSO-80 Silicone Transformer Oil

Chemical Name:Linear Polydimethylsiloxane (PDMS)
Product Category:Silicone FluidsProducts
Structural Formula:silicone-oil-63148-62-9-_11_65_b_116566
CAS No.:CAS No. 63148-62-9
EINECS:203-492-7
Molecular Formula:C6H18OSi2
Molecular Weight:162.38 g/mol

RSO-80 Silicone Transformer Oil

RSO-80 Silicone Transformer Oil is an environmentally safe alternative to PCB-containing askarels, used as a dielectric coolant in liquid-filled transformers. With exceptional thermal stability, RSO-80 is ideal for transformers located indoors or near buildings, where maintaining a thermally stable fluid is crucial for optimal performance and safety.

RSO-80 Silicone Transformer Oil is a 100% Polydimethylsiloxane (PDMS) silicone oil (CAS# 63148-62-9) with a viscosity of 50 cSt at 25°C. Specifically formulated for use as a dielectric fluid and coolant in high voltage transformers, RSO-80 is an environmentally safe alternative to PCB-containing askarels.

This silicone transformer oil is known for its high dielectric strength, high flash point, wide service temperature range, low vapor pressure, and good heat capacity. It also has a low pour point and experiences minimal viscosity change at both high and low temperatures. RSO-80 is completely inert to most substrates and contains no additives, such as thermal stabilizers.

Key Benefits:

  • High dielectric strength for superior electrical insulation
  • Thermally stable fluid ideal for transformers near buildings or indoors
  • Dehydrated to < 50 ppm water content for optimal dielectric performance
  • No additives and 100% PDMS silicone for enhanced stability and purity

RSO-80 Silicone Transformer Oil is the ideal solution for reliable and safe dielectric cooling in liquid-filled transformers, offering long-lasting performance with minimal environmental impact.

Typical Properties:

Parameter Unit: Value:
Appearance Crystal clear fluid
Density @ 25°C kg/dm3 .96M
Viscosity @ 25°C mm2 sec 50(cSt)
Water content ppm 50
Refractive Index 1.404
Electrical Properties:

Parameter Unit: Value:
Dielectric Breakdown voltage kV 50M
Permittivity @25°C, 50Hz 2.7
Dissipation factor @25C,50Hz 0.0001
Volume resistivity @ 25C ohm.cm ohm.cm 1.0 x 1014
Thermal properties:

Parameter Unit: Value:
Flash point (open cup) >300°C >572°F
Fire point (open cup) 370°C 698°F
Specific heat KJ/kg.K 1.51
Specific heat cal/gm°C 3.7×10-4
Thermal conductivity W (m.K) 0.151
Oxygen index TDLOI 21.4
Coefficient of Expansion cc/cc/°C 10.55 x 10-4

Properties of High Temperature Silicone Fluids:

  • High Temperature Laboratory Bath Fluid for precise temperature control
  • Excellent Dielectric Coolant for electrical insulation and cooling
  • Dielectric Silicone Bath Fluid for reliable heat transfer in high voltage systems
  • High Temp / High Pressure Fluid for demanding environments
  • High Temperature Fluids for Flow Control ensuring consistent performance
  • High Temperature Calibration Fluid for accurate testing and measurements
  • Refractive Index Matching Fluid for optical applications
  • Silicone Damping Fluid for electrical equipment and gauges
  • High Temp Silicone Lubricant for Plastic Parts providing smooth operation
  • Silicone Lubricants for Rubber Parts enhancing flexibility and performance

These high temperature silicone fluids offer versatile solutions for a wide range of industrial and electrical applications, ensuring durability, safety, and optimal performance in extreme conditions.

Packaging Specifications

Packaging Specifications

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RSO-80 Silicone Transformer Oil : Guide

RSO-80 Silicone Transformer Oil meets IEC 836 and ASTM D 4652 standards for dielectric fluids, ensuring it is suitable for electrical insulation. It exceeds fire point requirements and is classified within IEC 1100 for low heat of combustion, presenting a lower fire hazard compared to other transformer fluids. It is difficult to ignite and will produce less heat and smoke if ignited, often self-extinguishing once the heat source is removed.

RSO-80 is VOC exempt, HAP-free, does not contribute to ozone depletion or global warming, and meets RoHS compliance, making it an eco-friendly choice for electrical systems.

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