Dimethicone- ▸ High-damping-action instrument fluid for military, industrial and avionic gauges, meters and monitors (meets VV-D-1078)
- ▸ Vibration / pulsation / torque damping in dashpots, rotary dampers, level controllers, valves and flow meters
- ▸ Dielectric / electrical insulating fluid with moisture and corrosion protection
- ▸ Lubricant for rubber, plastic and metal parts and O-rings/valves (not recommended for silicone rubber — swelling)
- ▸ Release agent and plastics / textile additive and antifoam
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.
Silicone Oil 100,000 cSt is an instrument-and-avionic damping fluid. Very high viscosity with a low viscosity-temperature coefficient, high shear resistance and high compressibility gives steady, temperature-insensitive damping for precision instruments (it meets Federal Spec VV-D-1078), and it doubles as a dielectric fluid and a slow-migrating release and plastics/textile additive.
Frequently Asked Questions
What is 100,000 cSt silicone fluid used for?
100,000 cSt silicone fluid (dimethicone / PDMS) is an instrument and avionic damping fluid — steady, temperature-insensitive damping for gauges, meters and instruments (meets VV-D-1078) — and also a dielectric fluid and a slow-migrating release and plastics/textile additive. It is very high viscosity but still pourable.
Is 100,000 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); 100,000 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 100,000 cSt silicone oil flammable?
No. At a flash point of ≥ 315 °C (open cup) the 100,000 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.
Identity and hazard data sourced from PubChem and authoritative regulatory references. Confirm against the grade-specific CoA and SDS supplied with every shipment.