A polydimethylsiloxane liquid with operating temperature ranges of -40°F to 750°F (-40°C to 400°C).
Product Overview

SYLTHERM™ 800 is a high-quality, long-lasting silicone fluid designed for high temperature liquid phase operations. SYLTHERM™ 800 is manufactured by Dow Chemical and delivers exceptional heat transfer fluid performance in extreme applications between -40°F and 750°F.

SYLTHERM™ 800 exhibits very slow shift in the silicone-oxygen (siloxane) molecular structure under lengthy exposure to high thermal stress and settles into a stable structure based on the operating pressure & temperature. This dynamic performance allows SYLTHERM™ 800 to deliver an unrivaled lifespan for a range of industrial equipment.

Product Specifications

Temperature: -40 to 750 °F (-40°C to 400°C)
Vapor Pressure: 197.32 (91.84°C)
Specific Heat: 0.360 °F (-17.57°C)
Viscosity: 51.0
Density: 61.9
Freezing Point: < -40 °F (-40°C)
Flash Point: 320 °F (160°C)
Autoignition: 725 °F (385°C)

Primary Chemistry: Polydimethylsiloxane
Features & Benefits
Fluid life greater than 10 years at 400 °C Low toxicity No odor Non-fouling Very low in acute oral toxicity Low Freeze Point High Temperature Stability
Problems Solved

High Thermal Fluid Fouling Rates
Inadequate Heat Transfer Fluid Operational Life
Frequent Required System Venting & Odor Concerns

SYLTHERM™ 800 heat transfer fluid can be used in a broad range of industrial processes & equipment, including but not limited to: NDC Lube Oil Recycling Heat Recovery Exchangers & Chillers Polymer Processing Carbon Fiber Processing Process Heating & Cooling Chemical Synthesis & Production