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SILISILRTV-2 silicones

SILISIL Silicone Oil 300,000 cSt

Ultraviscous PDMS for high-end antifoam and premium conditioner

Cured Color
Transparent
Viscosity (cSt)
300'000 cSt
Density (g/cm³)
0.978 g/cm³
Curing type
Non-reactive

CHF 0.00 / pc.
  • Brand
  • Color cured - Transparent
  • Food contact
  • Medical grade
  • Viscosity (cSt)
  • Density (g/cm³)
  • Flash point (°C)
  • Pour point (°C)
  • Curing type
  • Electrical Insulation
  • Certificates
  • Container
Your selection: SILISIL Silicone Oil 300,000 cSt
General terms and conditions of business

HS Code: 39100000

SILISIL Silicone Oil 300,000 cSt sample offer

Technical Data

Typical values, not a specification. The technical data sheet (TDS) is binding.

Product Information

Brand
SILISIL
Curing type
Non-reactive
Container
1kg, 5kg, 20kg, 50kg, 200kg, 100kg

Physical Properties

Cured Color
Transparent
Viscosity (cSt)
300'000 cSt
Density (g/cm³)
0.978 g/cm³

Electrical Properties

Electrical Insulation
Yes

Product Approvals

Food contact
No
Medical grade
No
Certificates
RoHS, REACH

Thermal Properties

Flash point (°C)
>300 °C
Pour point (°C)
-48 °C
Keywords
  • SILISIL
  • Silicone
  • Silicone Oil
  • Silicone Fluid
  • PDMS
  • Swiss warehouse
  • polydimethylsiloxane
  • 1K
  • non-reactive
  • ultra-high viscosity
  • Damping
  • Slow-Flow Damping
  • Swiss brand
  • 300'000 cSt

Product Description

SILISIL Silicone Oil 300'000 cSt is an ultra-viscous PDMS for high-end antifoam and premium conditioner.

SILISIL Silicone Oils are high-purity linear polydimethylsiloxane (PDMS) liquids with a purity of 100%. Their viscosity of 300,000 cSt defines their range of applications — from lubrication and release agents to hydraulic functions and specialized care and industrial applications.

Special Premium Class

300,000 cSt is the intermediate class for applications with the highest service life requirements — a very effective antifoam and high-end conditioner base.

SILISIL Silicone Oil 300,000 cSt in figures
300'000
cSt
>300 °C
Flash point
-40 °C
Freezing point
~0,97
Density

What distinguishes SILISIL Silicone Oil 300,000 cSt

Highly effective antifoam
Defoamer concentrate with minimal dosage for industrial use.
Premium conditioner
High-end care base for luxury hair conditioners.
Very high film stability
Lubricating and separating film with maximum load-bearing capacity.
Special premium viscosity
Defined application profile between 100k and 500k cSt.
Highly compressible
Structurally stable under extreme mechanical stress.
Water repellent
Hydrophobicity with maximum durability on surfaces.

What is SILISIL Silicone Oil 300,000 cSt used for?

Antifoam in petroleum & petrochemicals
Defoaming in the highest requirement profiles with the lowest dosage.
High-end conditioner
Luxury skincare products with long-lasting effects.
Premium care
High-quality furniture and floor care products.
Special industrial application
Defined application profiles with ultra-high viscosity.
Specialized lubrication
The most demanding industrial lubrications.
Anti-foam industry
Effective foam control in industrial processes.
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 300,000 cSt in direct comparison with related viscosities in our product range.

300'000 cSt
Current Product
100'000 cSt →500'000 cSt →1,000,000 cSt →
Viscosity (cSt)300'000100'000500'0001'000'000
Main applicationAntifoam in petroleum & petrochemicalsAntifoam in the petroleum industryPetroleum Extraction & RefiningPremium Petroleum Industry

Frequently asked questions about SILISIL Silicone Oil 300,000 cSt

Practical application and design questions — answered by SILITECH.

SILISIL Silicone Oil 300,000 cSt: Ultra-viscous PDMS for high-end antifoam and premium conditioner. Main applications include antifoam in the petroleum and petrochemical industries, high-end conditioner, and premium care products.

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. 300,000 cSt is optimal for: antifoam, petroleum & petrochemicals, and similar application profiles. For other application characteristics, you will find related viscosities in the comparison table above — if you are unsure, we will be happy to advise you on your specific application.