Chemola™ ThredOn™ 306 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.
Heavy DC is specifically formulated for use on drill collar rotary shoulder connections and is also great for drill pipe.
|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|
|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)|
|Item Number||Unit Size|
|0306050WMS||50 lb metal pail|
*Caution: Do Not Use On Potable Water Lines
Do Not Use On Oxygen Services.
Special packaging sizing available upon request.