BESTOLIFE PB Black is an economical lead-based compound for use on drill collars, drill pipe, and other threaded connections. It performs comparably to more expensive drill collar compounds at a very competitive cost. APPLICATIONS Economical drill collar compound. PRODUCT CHARACTERISTICS Color: Black Penetration: 290-310 (ASTM D 217) Weight/Gallon: 18.3 pounds/gallon Dropping Point: ≥350°F (≥177°C) Flash Point: ≥392°F (≥200°C) Brushable To: 10°F/-12°C Friction Factor: 1.0 (per API RP 7A1) Contains: Metallic lead and other non-metallic additives