SILISIL Silicone Oil 100,000 cSt
SILISIL Silicone Oil 100,000 cSt — ultra-high-viscosity PDMS silicone oil.
SILISIL Silicone Oil 100,000 cSt — ultra-high-viscosity polydimethylsiloxane (PDMS).
Slow-flow damping and special formulations. Density 0.978 g/cm³, flash point >300 °C. Shipped from our Swiss warehouse with SDS and TDS.
HS code:
39100000
SILISIL Silicone Oil 100,000 cSt — Ultra-high-viscosity PDMS silicone oil
SILISIL Silicone Oil 100,000 cSt is an ultra-high-viscosity, long-chain polydimethylsiloxane (PDMS) with a molecular weight already in the range of silicone polymers. It flows only slowly even under gravity, thereby providing remarkable damping properties—used wherever precise, slow movement, special thixotropy, or a rheologically elastic component is required.
Key features
| Viscosity at 25 °C | 100,000 cSt (100,000 mPa·s) |
| Density at 25 °C | 0.978 g/cm³ |
| Flash point (open cup) | >300 °C |
| pour point | -48 °C |
| surface tension | 21.5 mN/m |
| Polymer type | Polydimethylsiloxane (PDMS), linear |
All other properties (refractive index, thermal conductivity, dielectric properties, etc.) are listed as structured product attributes on this page and can be filtered in the shop. Please refer to the technical data sheet (TDS) in the documents section for the official values.
product benefits
- Slow-flow behavior — Drops take minutes to hours
- The ideal foundation for long-term stable damping systems
- Very high thermal stability and resistance to oxidation
- Formulates nearly gel-like matrices in silicone compounds
- Excellent dielectric properties even at large film thicknesses
- Long-lasting protective effect on surfaces
- Low volatility; no evaporation under continuous load
Typical Applications by Industry
- Slow-flow damping: precision mechanics, measuring instruments, optical devices, kitchen scales
- Torsional damping: Slow-damping mechanisms in the automotive, aerospace, and instrumentation industries
- Silicone compound matrix: Viscosity carrier in silicone rubber masterbatches
- Grease and paste bases: Highly thixotropic systems with exceptional stability
- Sealing and Impregnating Fluid: Long-term impregnation of specialized components (electronics, sensors)
- Specialized Hydraulics: Low-flow Applications with Precisely Controlled Motion
Processing and Compatibility
- Compatible with most organic solvents (aromatic and aliphatic hydrocarbons, ethers, esters)
- Emulsifiable using standard emulsifiers and techniques (rotor-stator, high-pressure homogenization)
- Typical dosage as a surface additive: 0.1–1%
- In formulated or cosmetic products: 1–10%, depending on the formulation
- Inmiscible with water and highly polar solvents (methanol, glycerin)
Storage, Handling, and Shelf Life
- Store in original containers, in a dry place, protected from direct sunlight, at temperatures below 60 °C
- Unopened products typically remain stable for years—the exact shelf life is specified in the TDS
- Close tightly after opening to prevent moisture from entering
- Avoid eye contact — mandatory information in the safety data sheet (SDS)
Available sizes
- 1 kg bottle (sample bottle)
- 5-kg canister
- 25-kg canister
- 200-kg drum
- 1,000 kg IBC (upon request)
SILISIL Silicone Oil 100,000 cSt is packaged, tested, and shipped from our Swiss warehouse by SILITECH AG. Every batch is traceable; we provide batch certificates upon request. Our silicone specialists are always available to assist you with selecting the appropriate viscosity or with formulation development.
Frequently Asked Questions About SILISIL Silicone Oil 100,000 cSt
The most important answers regarding applications, features, and availability.
SILISIL Silicone Oil 100,000 cSt is an ultra-high-viscosity polydimethylsiloxane and is particularly suitable for slow-flow damping in precision mechanics and measuring instruments, as a viscosity modifier in silicone compounds, and for highly thixotropic greases and sealants.
The distinctive feature of SILISIL Silicone Oil 100,000 cSt is its slow-flow behavior combined with a long thermal life. Ultra-high-viscosity PDMS oils are used whenever controlled, slow flow is required—for example, in damping systems where the performance characteristics must remain stable for years. The exact specifications—in particular viscosity (100,000 cSt), density (0.978 g/cm³), flash point (>300 °C), and pour point (-48 °C)—are also listed as product attributes and can be filtered in the shop.
Yes. SILISIL Silicone Oil 100,000 cSt is an excellent electrical insulator with a dielectric strength of approximately 14 kV/mm, a dielectric constant of about 2.8, and a volume resistivity in the order of 10¹⁵ Ω·cm. This makes the product particularly suitable for dielectric and electronic impregnation applications.
SILISIL Silicone Oil 100,000 cSt is available from our Swiss warehouse in standard sizes of 1 kg, 5 kg, 25 kg, 200 kg, and 1,000 kg. Other sizes and packaging options are available upon request to meet customer specifications—we provide a free sample for preliminary testing.
Consulting, Samples, and Project Quotes
Not sure which viscosity to choose or how to use the product? Our silicone specialists at SILITECH are here to advise you—with no obligation—on both technical and pricing matters. For preliminary testing, we also provide sample quantities and small-volume fillings upon individual agreement. Submit a request now.
product specifications
| Physical properties | |
|---|---|
| Paint cured | Transparent |
| product information | |
|---|---|
| container | 100 ml or 1 kg or 4 kg or 25 kg or 190 kg or 200 kg |
| network type | Not reactive |
| brand | SILISIL |
| product approvals | |
|---|---|
| Certificates | RoHS or REACH |
| food contact | No |
| Suitable for medical use | No |
| Areas of application | |
|---|---|
| Main application | Electronics Encapsulation |
| Electrical Properties | |
|---|---|
| Electrical insulation | Yes |
| Uncategorized | |
|---|---|
| Viscosity (cSt) | 100,000 cSt |
| Density (g/cm³) | 0.978 g/cm³ |
| Flash point (°C) | >300 °C |
| Freezing point (°C) | -48 °C |
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