Recommended Uses
Chemola™ ThredOn Heavy DC is specifically formulated for use on drill collar rotary shoulder connections and is also great for drill pipe.
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
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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| 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% |
| Item Number | Unit Size | Quantity |
| 0306050WMS | 50 lb metal pail |