BESTOLIFE Cal Bronze Lead Free is a multipurpose thread compound for drill pipe and drill collars in light to medium duty drilling. CBLF can also be used in water well drill pipe, casing or line pipe. NSF Registered. APPLICATIONS Lead free copper compound for use on drill collars and drill pipe. PRODUCT CHARACTERISTICS Color: Copper Penetration: 310-330 (ASTM D 217) Weight/Gallon: 10.2 pounds/gallon Dropping Point: ≥350°F (≥177°C) Flash Point: ≥392°F (≥200°C) Brushable To: 10°F (-12°C) Friction Factor: 1.1 (per API RP 7A1) Contains: Copper, graphite, and other non- metallic additives