Full definition
Polychloroprene (CR) compound engineered for the extreme conditions of mining operations: high abrasion from sharp mineral particles, exposure to aggressive process chemicals (acids, alkalis, flotation reagents), outdoor weathering, and fire safety requirements in underground mines. Formulation: high NR/CR blend (NR for abrasion resistance, CR for chemical/flame resistance), high carbon black loading (abrasion protection), antiozonants, and flame retardant additives for underground fire safety per MSHA and ISO 340. Hardness: 55-70 Shore A. Abrasion resistance: <150 mm³ (DIN method). Applications: chute and hopper linings (protecting steel from abrasive ore), conveyor skirting, screen deck protection, pump linings, chemical-resistant gaskets, hose covers for process water and slurry, and expansion joints in process piping. Mining-grade CR provides a cost-effective balance between the superior abrasion of NR and the superior chemical/flame resistance of CR. For extreme abrasion, polyurethane (PU) outperforms CR 3-5x but costs 2-3x more and lacks flame resistance. For extreme chemicals, FKM or PTFE-lined options may be needed. Per mine operator and OEM specifications.