Tri-Therm 300 for vacuum applications – fill fluidspecificationsTemperature limits:Below atm pressure: See Figure 1-2 for vapor pressure curveAt or above atm pressure: –40 to 300 °C/–40 to 572 °FViscosity at 25 °C (77 °F): 8.6 cSTSpecific gravity at 25 °C (77 °F): 0.795Coefficient of thermal expansion: 0.00078 cc/cc/°C (0.00053 cc/cc/°F)Description/applicationsTri-Therm 300 for vacuum applications is specifically designed for applications with a large operatingtemperature range and pressures below 14.7 psia (1 bara). Tri-Therm 300 for vacuum applications is anadvanced general use and food-grade fill fluid. The expanded operating temperature range, lowviscosity, and low thermal expansion allow Tri-Therm 300 to have improved performance and a widertemperature range compared to Silicone 200. Tri-Therm 300 is a non-silicone, food grade fill fluid that isNSF HT1 registered, certifying it acceptable for use where there is possibility of incidental food contact.Refer to the vapor pressure curve below for acceptable operating pressure and temperature limits.