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Dow Corning DC 976 High Vacuum Greases

Low volatility over a wide temperature range.


  • Lubricates synthetic and silicone rubber gaskets for high-temperature rough-vacuum grease uses
  • Unaffected by vegetable oils, mineral oils, and common gases, and resists most aqueous solutions of inorganic salts
  • Used in chemical plants to lubricate plug valves, flow meter bearings, ceramic plug cocks, water treatment equipment, and fire extinguisher valves

Specifications Table

Vapor Pressure
@150°C: 1.2 x 10-5Torr (Degassed) @200°C: 7 x 10-4Torr (Degassed)
Flash Point
​> 300ºC
Specific Gravity
@25°C: 1.1
Kinematic: (cSt): 2000000
Light Gray
Melting Point
Bleed after 24 Hours
@199°C: 0.5% max.
Evaporation after 24 Hours
@199°C: 2.0% max.
Solidification Point
unworked: 170 to 230 mm/10; worked (60): < 260 mm/10

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.

Fluids FAQ
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Ordering Table

All dimensions listed below, unless otherwise stated, are in grams.

Description Grade Size Safety Data Sheet Part Number Price In Stock Add To Cart
Description Grade Size Safety Data Sheet Part Number Price In Stock Add To Cart
DOW CORNING 976V,5.3 OZ TUBE MAX VOC 7G/L, SI VAC GREASE (MOLYKOTE) DC 976 5.3 oz. SDS for DC976VF DC976VF $49.00 In Stock
DOW CORNING 976V 8LB CAN,MAX VOC 7 G/L,SI VAC GREASE (MOLYKOTE) DC 976 8 lbs. SDS for DC976VM DC976VM $1,007.00 In Stock
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