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SILISIL Silicone Oil 20 cSt

SILISIL Silicone Oil 20 cSt

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Versatile silicone oil with improved film formation for hydraulic fluids, transformer insulating fluid, polishes, and as a release agent in plastic and rubber molding.

SILISIL Silicone Oil 20 cSt is a versatile silicone oil with improved film formation for demanding applications. Typical areas of application include hydraulic fluids for special applications, insulating fluid in transformers, emulsion and paste polishes, release agents in plastic and rubber molding, as well as components in medical devices. The oil offers a high flash point, uniform film formation, excellent lubricating properties, low surface energy, chemical inertness, and outstanding dielectric properties; it is compatible with many organic solvents and can be emulsified.

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  • Brand
  • Curing type
  • Cured Color
  • Viscosity (cSt)
  • Density (g/cm³)
  • Electrical Insulation
  • Food contact
  • Medical grade
  • Certificates
  • Flash point (°C)
  • Pour point (°C)
  • Container

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SILISIL Silicone Silicone Oil Silicone Fluid low-viscosity PDMS Swiss stock Polydimethylsiloxane 1K non-reactive Dielectric Release Agent Lubricant Hydraulic Fluid Swiss brand 20 cSt

 
General Terms and Conditions

Shipping usually within 1 to 3 business days
(Availability confirmed after order)

Express logistics. Fast and reliable within Switzerland & Europe

From Swiss stock Dispatch within 24h Batch certificate Invoice 30 days (B2B) Technical advice
Shipping & Delivery

Usually 1 to 3 business days

Availability is confirmed after order receipt.

Express logistics within Switzerland & Europe.

Terms and Conditions →

Product data

HS Code: 39100000

HS Code: 39100000

SILISIL Silicone Oil 20 cSt
SILISIL Silicone Oil 20 cSt
SILISIL ·

SILISIL Silicone Oil 20 cSt is PDMS for capacitor impregnation, dielectric insulation, and electronic applications.

SILISIL Silicone Oils are high-purity linear polydimethylsiloxane fluids (PDMS) with 100% purity. The viscosity of 20 cSt defines the application spectrum — from lubrication to release agents and hydraulic functions to specialized care and industrial applications.

Standard for dielectric applications

20 cSt is the established viscosity for capacitor impregnation and transformer oil replenishment — good spreadability combined with high dielectric strength and low dissipation factor.

SILISIL Silicone Oil 20 cSt in Numbers
20
cSt
>250 °C
Flash point
14 kV/mm
Breakdown
-60 °C
Freezing point

What sets SILISIL Silicone Oil 20 cSt apart

Dielectric medium
Excellent dielectric strength for electronic impregnation and potting.
Low dissipation factor
Dissipation factor 10⁻⁵ — minimal dielectric losses in high-frequency applications.
Capacitor impregnation
Classic application in paper-film capacitors with polymer windings.
Stable spreading effect
Distributes evenly in complex geometries.
Thermal stability
Resistant up to +200 °C without loss of properties.
Water repellent
Impregnation protects against moisture over a long period of time.

What is SILISIL Silicone Oil 20 cSt used for?

Capacitor impregnation
Dielectric filling in film and paper capacitors with high dielectric strength.
Transformer auxiliary oil
Special impregnation for dry transformers and high-voltage components.
Electronics potting
Low-viscosity impregnation of coils and winding bodies.
Lubrication of precision parts
Thin but stable lubrication for micromechanics and medical devices.
Hydraulic damping
Low-viscosity damping in servo motors and precision drives.
Antifoam concentrate
Highly effective defoamer for aqueous and non-aqueous systems.
Data Sheets & Safety Data Sheet
Complete TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Important Notes

Storage & Handling
Store in the unopened original container in a dry, cool place (ideally <60 °C). Avoid eye contact. Consult the SDS before opening.
Solvent compatibility
Soluble in aromatic, aliphatic, and chlorinated solvents. Not miscible with water and alcohols.
Release agent effect before painting
Standard PDMS prevents paint adhesion on subsequent coatings. For paintable applications, choose SILISIL Silicone Oil – Paintable Grade.
Application consulting
SILITECH advises you on the optimal viscosity selection for your application — contact us for a consultation.

Which viscosity for which application?

SILISIL Silicone Oil 20 cSt in direct comparison with related viscosities from our range.

20 cSt
Current Product		 10 cSt →50 cSt →100 cSt →
Viscosity (cSt)201050100
Main applicationCapacitor impregnationElastomer/plastic lubricationPneumatics & Compressed Air LubricationInjection molding release agent
Topics & Application Fields
Key terms related to this product. Also useful for our search and filters.
SILISIL Silicone Silicone Oil Silicone Fluid low-viscosity PDMS Swiss stock Polydimethylsiloxane 1K non-reactive Dielectric Release Agent Lubricant Hydraulic Fluid Swiss brand 20 cSt

Technical data for SILISIL Silicone Oil 20 cSt

All 12 Product Information 3 Physical Properties 3 Electrical Properties 1 Product Approvals 3 Thermal Properties 2
Product Information
Brand SILISIL
Curing type Non-reactive
Container 1 kg, 5 kg, 25 kg, 200 kg, 950 kg
Physical Properties
Cured Color Transparent
Viscosity (cSt) 20 cSt
Density (g/cm³) 0.949 g/cm³
Electrical Properties
Electrical Insulation Yes
Product Approvals
Food contact No
Medical grade No
Certificates RoHS, REACH
Thermal Properties
Flash point (°C) 230 °C
Pour point (°C) -60 °C

Please refer to the technical data sheet (TDS) in the "Documents" tab for binding values.

Documents and data sheets

Click on a document for the preview or the download icon for direct download.

Safety Data Sheets (SDS) 1
SILISIL Silicone Oil 20 cSt - Safety Data Sheet DE.pdf
120 KB

Frequently Asked Questions about SILISIL Silicone Oil 20 cSt

Practical application and design questions — answered by SILITECH.

SILISIL Silicone Oil 20 cSt: PDMS for capacitor impregnation, dielectric insulation, and electronic applications. Main applications include capacitor impregnation, transformer auxiliary oil, and electronic potting.

PDMS (polydimethylsiloxane) is a linear silicone fluid that combines high thermal stability, low surface tension, very good dielectric properties, and broad temperature resistance. The viscosity (measured in centistokes, cSt) determines the field of application — low viscosities are suitable for volatile applications and lubrication, high viscosities for damping and conditioners.

SILISIL Silicone Oils are soluble in aromatic, aliphatic, and chlorinated solvents (e.g., toluene, xylene, hexane, diesel). They are not miscible with water and alcohols. For anti-foam applications, high-viscosity PDMS is diluted in hydrocarbon solvents and introduced using a dosing pump.

Store in the unopened original container at room temperature (ideally below 60 °C). Avoid eye contact. SILISIL Silicone Oils are generally non-toxic, odorless, and tasteless — nevertheless, consult the Safety Data Sheet (SDS), which is available in the "Documents" tab.

Viscosity determines the application. 20 cSt is optimal for: capacitor impregnation and similar application profiles. For other application characteristics, you will find related viscosities in the comparison table above — if uncertain, we are happy to advise you on your specific application.

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Product Specifications

Product Information
Container 1 kg or 5 kg or 25 kg or 200 kg or 950 kg
Brand SILISIL
Curing type Non-reactive
Physical Properties
Cured Color Transparent
Viscosity (cSt) 20 cSt
Density (g/cm³) 0.949 g/cm³
Electrical Properties
Electrical Insulation Yes
Product Approvals
Certificates RoHS or REACH
Food contact No
Medical grade No
Thermal Properties
Flash point (°C) 230 °C
Pour point (°C) -60 °C
Keywords
Keywords
SILISIL Silicone Silicone Oil Silicone Fluid low-viscosity PDMS Swiss stock Polydimethylsiloxane 1K non-reactive Dielectric Release Agent Lubricant Hydraulic Fluid Swiss brand 20 cSt

Documents and data sheets

Safety Data Sheets (SDS) and Technical Data Sheets (TDS) for download: