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DOWSIL 550 Fluid also known as Dow Corning 550 Fluid is a Polyphenylmethyldimethylsiloxane fluid for use as lubricant, heat transfer fluid and thermostat fluid.
Applications:
As a lubricant:
- Base oil for high temperature ball bearing greases.
- Lubricating oil for high temperature instruments.
- Impregnating oil for sintered bronze bearings in small electric motors and mechanisms exposed to high ambient temperatures.
As a heat transfer medium:
- Heat-treating baths for speciality metals.
- Heat exchange fluid for research apparatus and instrument calibration baths.
- Heat transfer oil in capacitors, transformers and various electronics.
As a thermostat fluid:
- Suitable for temperatures from -40°C to 315°C in thermostat systems, which should be kept clean.
Features:- Low volatility
- Serviceable temperature range of -40°C up to 230°C in open systems and up to 315°C in closed systems
- Low viscosity of 125mm²/sec at 25°C
- High flash point
- Excellent heat transfer characteristics
- Flat viscosity temperature curve
- Good compressibility
- Good oxidation and gumming resistance
