This Lip seal 86334174 avoids these risks because it’s a genuine OEM part, engineered to Montabert’s strict standards for heavy-duty mining use. Unlike generic alternatives, it uses a specialized oil-resistant, wear-resistant rubber compound that retains elasticity even after 800 hours of continuous pressure cycles and vibration. Its seal lip is precision-machined to match HC50’s component tolerances exactly (±0.005mm), so there’s no “misalignment” (a common issue with aftermarket seals that causes leaks or accelerated wear).

The 800-hour replacement cycle isn’t arbitrary—it’s based on real mining field data: after this period, even OEM lip seals show micro-wear on the seal lip, which reduces their ability to block leaks and contaminants. Proactive replacement here keeps the HC50’s hydraulic system clean and efficient, protecting expensive internal parts like the pump and valves. And with short delivery times (no 2-3 week waits like generic seals), you can restock fast to keep your drills running. Add in competitive pricing that beats many non-OEM options, and this Lip seal 86334174 becomes an essential choice for mines prioritizing reliability and cost-control. Whether you’re drilling in underground hard-rock mines or surface quarries, it ensures your HC50 maintains stable sealing performance—shift after shift.