Silicone Fluids & Oils Available — Bulk Only

Silicone Oil 10,000 cSt (Dimethicone, PDMS)

Dimethicone
CAS 9006-65-9 · Formula (C2H6OSi)n

A high-viscosity 10,000 cSt dimethicone (PDMS) built for damping and durable, shear-stable lubrication that changes little over temperature.

Safety Data Sheet
HS Code
3910.00
At a Glance
Material Family
Silicone Fluids & Oils
Record Type
Polymer fluid
Primary Role
Lubrication · Slip / Release
Physical State
Liquid
Appearance
Clear, colorless, odorless fluid
Functional Roles
Dimethicone
Applications & Use Cases
  • Damping media and hydraulic stabilizers — insulating and damping in one fluid
  • Durable heat- and shear-resistant lubrication for treadmill belts, O-rings, gaskets and rubber/plastic interfaces
  • Electrical insulating / dielectric fluid
  • Polish and protective-coating ingredient — gloss with a durable film
  • Release agent and leather / textile auxiliary; personal-care conditioning (velvety skin feel)
Physical Properties
Viscosity
10000 cSt @ 25 °C
Specific gravity
0.974 @ 25 °C
Refractive index
1.403 @ 25 °C (nD)
Flash point
≥ 315 °C (open cup)
Surface tension
21.5 mN/m @ 25 °C
Pour point
≈ −48 °C (method-dependent)
Average molecular weight
~62,700 g/mol (approx., from viscosity)
GHS Safety Classification
Not classified under GHS

Mid- and high-viscosity polydimethylsiloxane fluids (>= 5 cSt) are reported as not meeting GHS hazard-classification criteria. The grade-specific SDS governs. A full SDS is supplied with every shipment and on request; hazard status is confirmed against the grade-specific SDS.

HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
3910 . 00
Chapter 39
Plastics and articles thereof
Heading 39.10
Internationally harmonized (WCO HS)
Subheading 3910.00
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
9006-65-9
Molecular Formula
(C2H6OSi)n
INCI Name
Dimethicone
Synonyms & Trade Names
Silicone oil 10,000 cSt Dimethicone 10,000 cSt Silicone fluid 10,000 cSt PDMS 10,000 Polydimethylsiloxane 10,000 cSt Dimethyl silicone oil 10,000 cSt 10,000 cSt silicone oil
Full Description

Silicone Oil 10,000 cSt is a damping-and-durable-lubrication grade. High viscosity with strong damping action, high compressibility and a low viscosity-temperature coefficient means vibration and shock control with little property change, while its high shear stability gives durable, heat-resistant lubrication of polymer parts.

Frequently Asked Questions

What is 10,000 cSt silicone fluid used for?

10,000 cSt silicone fluid (dimethicone / PDMS) is a damping and durable-lubrication grade: damping media and hydraulic stabilizers, heat- and shear-resistant lubrication of polymer parts, dielectric duty, polish and protective coatings, and personal-care conditioning. High viscosity resists breakdown from heat and mechanical stress.

Is 10,000 cSt silicone fluid the same as dimethicone or silicone oil?

Yes — silicone fluid, silicone oil, dimethicone and PDMS all refer to the same linear polydimethylsiloxane (CAS 9006-65-9); 10,000 cSt is the viscosity grade. Because it is a polymer rather than a single molecule, properties are reported per grade rather than as one fixed molecular weight.

Is 10,000 cSt silicone oil flammable?

No. At a flash point of ≥ 315 °C (open cup) the 10,000 cSt grade is not classified as flammable, and mid- to high-viscosity PDMS is not otherwise GHS-classified. Only the volatile sub-5 cSt grades (and discrete volatiles like MM) are flammable. A grade-specific SDS ships with every order.

Data Provenance & Quality
Enrichment Source
Manufacturer TDS + WCO HS
Last Verified
2026-06-20
CAS Status
Valid
Classification Confidence
High

Identity and hazard data sourced from PubChem and authoritative regulatory references. Confirm against the grade-specific CoA and SDS supplied with every shipment.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information.