Clearco Medium Temperature Pure Silicone Bath Fluids are medium-viscosity linear Polydimethylsiloxane (CAS #63148-62-9) that are formulated for medium temperature baths and medium temperature heat transfer applications. These fluids are clear, colorless, odorless, and inert to virtually all bath instruments and plastics.

The Medium Temperature Silicone Fluids encompass a viscosity range from 20cSt to 100cSt* (measures @ 25°C). Clearco Medium Temperature Silicone Bath Fluids are characterized by their high flash points, wide operating temperature ranges, high resistance to oxidation, low viscosity change at temperature, low vapor pressures, and inertness to virtually all plastics, rubbers and bath fluid instrumentation (not recommended for contact with silicone o-rings).

*cSt (cs) is a centistokes...measure of kinematic viscosity

The PSF-50cSt and PSF-100cSt Silicone Bath Fluids will remain stable @ 150°C (open system [presence of air) for approximately 1-year without breakdown or gelling. At 200°C (open system), PSF-100cSt Silicone Bath Fluid will remain stable for approximately 250 to 300 hours without gelling (see chart below).

However, for prolonged periods above 200°C, we recommend the DPDM-400 or PM-125 Fluids…See High Temperature Silicone Bath Fluids. In closed systems**, these medium temperature silicone bath fluids have a maximum long term operating temperature of 230°C.

**Closed system baths are systems from which air has been excluded.

Gel Time of Pure Silicone Fluid 100cSt @ Temperature (open system)

Bath Applications include: open system baths, closed system baths, constant temperature baths, circulating thermal temperature baths, closed loop baths, heat transfer baths, heat transfer fluids, thermostat fluids, calibration bath fluids, flow test fluids.