HS Code:
39100000
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
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.
300,000 cSt is the intermediate class for applications with the highest service life requirements — a very effective antifoam and high-end conditioner base.
What distinguishes SILISIL Silicone Oil 300,000 cSt
What is SILISIL Silicone Oil 300,000 cSt used for?
Important Notes
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) | 300'000 | 100'000 | 500'000 | 1'000'000 |
| Main application | Antifoam in petroleum & petrochemicals | Antifoam in the petroleum industry | Petroleum Extraction & Refining | Premium 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.


Silicones, silicone oils, sprays
Casting and potting resins