Hanwoo RHB321 Hydraulic Breaker Seal Kit

The Hanwoo RHB321 hydraulic breaker seal kit is engineered for large-class hydraulic breakers mounted on 18 to 25 metric ton excavators. The kit contains a complete set of dynamic and static seals required for cylinder resealing, including piston seals, rod seals, dust seals, O-rings, oil seals, wear rings, slide rings, hub seals, and the nitrogen diaphragm. Components are manufactured from high-grade rubber, polyurethane (PU), and PTFE compounds to withstand high-pressure hydraulic oil, extreme impact cycles, and abrasive construction environments. The RHB321 breaker features a 130 mm tool diameter and operates at working pressures typical for heavy demolition and mining applications. This seal kit restores original sealing integrity, prevents hydraulic oil leakage, and maintains consistent impact energy delivery. Compatible with Hanwoo and Everdigm RHB321 series breakers installed on excavators from manufacturers such as Kubota, Caterpillar, Hitachi, Komatsu, and John Deere.