This Rod joint 86300936 avoids these risks because it’s a genuine OEM part, engineered to Montabert’s strict standards for dynamic sealing. Unlike generic alternatives, it uses a specialized rubber compound (reinforced with polyurethane for flexibility) that retains sealing performance even after 800 hours of continuous rod movement—no premature hardening or tearing. Its inner diameter is precision-machined to match HC50’s piston rod size exactly, creating a tight fit that adapts to the rod’s motion without gaps (a common flaw in aftermarket seals that causes leaks).

The 800-hour replacement cycle is based on real mining field data: dynamic seals wear faster than static ones, and even OEM seals show measurable friction wear after this period—wear that weakens their leak resistance. Proactive replacement here keeps the piston rod joint sealed, protects the cylinder and piston from damage, and maintains the drill’s full impact power. And with short delivery times (no 2-3 week waits like generic seals), you can restock fast to keep your HC50 drills running. Add in competitive pricing that beats many non-OEM options, and this Rod joint 86300936 becomes an essential choice for mines prioritizing efficiency and cost-control. Whether you’re drilling in underground hard-rock mines or surface quarries, it ensures your HC50’s piston rod joint stays leak-free—shift after shift.