Joint/Drill Collar Compound, Jet-Lube(R) 21(R), 1 Gal, Aluminum Complex Thickener, Petroleum, Dropping Point 450 F, Temp Range 0 to 450 F, Flash Point Greater Than 430 F, Specific Gravity 1.1, NLGI Grade 1, Penetration @ 77 Deg F 310 to 330, Copper Strip Corrosion 1A, Typical, 4-Ball Weld Point 620, Contains No Lead or Zinc, For Drill String Connections, Resistant to Drilling Muds and Corrosion, Sticks To Wet Joints, Brushable, Resistance to Makeup Downhole, DOT Approval CA2006100003 Kopr-Kote and Jet Lube 21 Joint/Drill Collar CompoundsCopper-based compounds are recommended for the entire drill string under most conditions. For geothermal wells, high-angle holes, problem holes involving high temperatures, whip stocks, and horizontal drilling applications.DOT approved.Oil Field Compounds and Sealants