Stopper 21T-72-73170 for Komatsu Excavator PC1000-1 PC1100SE-6 PC1250LC-7 PC1250SP-8 PC1800-6 PC2000-8

My PC1250LC-7 had developed a persistent hydraulic leak that was costing me both fluid and downtime. This stopper seal solved the problem completely. The part arrived well-packaged and appeared to be high quality - the material felt durable and the dimensions were precise. Installation was straightforward. It fit exactly like the original part and seated perfectly without any issues. After getting everything reassembled, the leak stopped immediately. We've put several weeks of hard digging work on it since installation, and it's holding up perfectly with no signs of wear or new leaks. This is exactly what I needed to get my machine back in operation without expensive dealer parts. The quality seems excellent and it's performing just as well as the original. For any Komatsu owner dealing with hydraulic leaks, this part is definitely worth trying. Great value and reliable performance.