Center Joint Seal Kit for Construction Machinery 703-08-33610 Excavator. Premium quality hydraulic seal repair kit for construction machinery from topsealkit, delivers reliable sealing performance, superior pressure resistance, and perfect OEM compatibility for Komatsu PC200-7 PC210-7 excavators. This aftermarket premium center joint seal kit is constructed with high-quality materials to withstand extreme working conditions, ensuring zero fluid leakage and minimal equipment downtime for construction, mining, and demolition sites.