Husqvarna 598855401 O-Ring RDR34x2 Spare Part DM 400, DM 430

When your Husqvarna DM 400 or DM 430 core drill develops hydraulic leaks at the quick-connect fittings, this replacement O-ring restores proper seal integrity to keep you drilling through structural concrete without downtime. The RDR34x2 specification ensures exact fit for the hydraulic system components on these specific drill models. Regular replacement prevents hydraulic fluid loss that reduces drilling power and creates job site contamination. This genuine Husqvarna spare part maintains the tight tolerances required for consistent hydraulic pressure during deep core drilling operations. Keep spares in your service kit to handle seal failures on site rather than losing hours to parts runs. Built for concrete cutting contractors and rental equipment maintenance teams who need to keep drilling equipment operational.