BESTOLIFE C-55 is a lead-based thread compound for rock drill steel joints, couplings, and bits, formulated to withstand the stresses and temperatures of percussion rock drilling. C-55 will not melt or leave burnt residue to bind threads, and is suitable for all rotary drilling joints.
| Color | Black |
| Penetration (ASTM D 217) | 265-285 |
| Weight/Gallon (Lbs./Gal.) | 21.3 |
| Dropping Point (F) | >500 |
| Flash Point (F) | >392 |
| Brushable To (F) | 15 |
| Friction Factor (per API RP 7A1) | 1 |
| Contains | Over 60% metallic lead and other nonmetallic additives |
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- 10202020.pdf (SDS)
- C-55_TDS.pdf (TDS)
