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Drilling Compounds

Drill Pipe Grease | Drilling Compounds | Pipe Dope | Pipe Storage & Thread Protection | Thread Compounds | ThredOn® | Tool Joint Compounds

Chemola™ ThredOn Heavy DC

60% Lead Drill Collar Compound

Chemola™ ThredOn Heavy DC is a heavy duty drill collar compound containing a minimum of 60% atomized lead powder. Heavy DC is resistant to vibration, contraction or expansion of tool joints and can be used as a lubricant and sealant for all threaded connections. Heavy DC prevents metal to metal contact, eliminates galling and seizure of threads. It provides a tight, leak-proof seal under high temperature and pressures and protects threads against corrosion. Heavy DC conforms to the requirements and standards of API Spec. 7, Appendix F, May, 1979.

*Caution: Do Not Use On Potable Water Lines

Recommended Uses

Chemola™ ThredOn Heavy DC is specifically formulated for use on drill collar rotary shoulder connections and is also great for drill pipe.

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Packaging Information

Item Number Unit Size Quantity
0306050WMS 50 lb metal pail

Typical Characteristics

Appearance Black, Smooth
NLGI 1
Penetration (ASTM D217) 300-330
Worked Penetration, 60x (ASTM D217) 300-330
Base Grease Lithium complex
Base Oil Mineral Oil
Base Oil Viscosity 140 cSt at 40°C
Base Oil Viscosity 10 cSt at 100°C
Base Oil Pour Point -10°F (-23°C)
Solids Content 60% lead
Specific Gravity 2.6
Density (lb/gal) 21.7
Dropping Point (ASTM D566) 500°F (260°C)
Flash Point 430°F (221°C)
Temperature Range 0°F to 500°F (-18°C to 260°C)
Friction Factor (API 7A1) 1.0
Brushable To 0°F (-18°C)
Sulfur Content <0.3%