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Dow Corning DC 702 Silicone Pump Fluid

Discontinued Product KJLC no longer offers the Dow Corning DC Silicone Pump Fluids. Please consider the KJLC 704 as a possible alternative and feel free to contact KJLC at with any additional questions.

Mixture of phenylmethyl and dimethyl cyclosiloxane making it resistant to oxidation/hydrolysis.


  • Relatively low cost
  • Ideal for high-speed diffusion pumps (10-5 Torr range) and large vapor booster pumps (10-4 Torr range) used in high gas-load production processes
  • Applicable for heat-treat furnaces, aluminizing TV tubes, and vacuum metallurgy

NOTE: Do not use silicone fluids in mechanical pumps.

Specifications Table

Vapor Pressure
@25°C: 1 x 10-6
Pour Point
Flash Point
Boiling Point
@0.5 Torr (°C): 180
Fire Point
Specific Gravity
1.07 (g/cc)
@25°C (cST), 45
Hazardous Ingredients

Shelf Life

It is strongly recommended using all fluids and greases at the time of receipt, however when storage is necessary, rotate older stock into use first and observe the recommended parameters listed below.

Silicone Oils & Grease

Shelf life is minimum 5 years when material is kept in original container and stored at normal, ambient temperatures out of direct sunlight.

When stored under normal warehouse conditions, Dow Corning High Vacuum Grease has a shelf life of 60 months from date of manufacture, which is marked on each tube.

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