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Chemola™ Desco 660

Hydrocarbon Service for McEvoy Type Valves

Chemola™ Desco 660
is a superior gate valve lubricant/sealant formulated with 100% synthetic oils and non-soap thickeners. It is very effective in gas service (except chlorine, bromine, fluorine, and oxygen) and highly resistant to washout. It has excellent metal adhesion, corrosion resistance, EP characteristics and is water resistant.

Recommended Uses
Chemola™ Desco 660 can be used in aliphatic hydrocarbons, alkalis, dilute acids, salt water, water, sour crude and sour gas.

Typical Characteristics

Appearance Dark green, smooth, tacky
Penetration (ASTM D217) 355-385
Worked Penetration, 60x (ASTM D217) 355-385
Base Oil Synthetic ester
Base Oil Viscosity 30,000 cSt at 40°C
Base Oil Pour Point 10°F (-12 °C)
Thickener Inorganic
Additives Antioxidant package
Specific Gravity 1.3
Density (lb/gal) 11.1
Dropping Point (ASTM D566) >500°F (260°C)
Flash Point >550°F (288°C)
Temperature Range 0°F to 400°F (-18°C to 204°C)

Resistance to Water (FTM 5415)

Resistance to 50% Ethanol in Water (FTM 5415) Pass
Resistance to Synthetic Condensate (FTM 5415 mod) Pass
Resistance to Mineral Spirits (FTM 5415 mod) Pass
Resistance to 20% Hexane in Mineral Spirits (FTM 5415 mod) Pass
Resistance to Diesel Fuel (FTM 5415 mod) Pass
Resistance to Brine, 135°F (53°C) (ASTM D1748 mod) Pass



Packaging Information

Item Number Unit Size 
0826010QB 10 lb can
0826025WMS 25 lb pail
0826040WMS 40 lb pail
0826120KG 120 lb keg
0826400DR 400 lb drum


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For Use In Gate Valves.
Do Not Use On Oxygen Services.

Special packaging sizing available upon request.

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