PU Rod Seal / U-Cup Seal (UN-Type) For Hydraulic Cylinders - Sizes 4mm To 28mm

About This Product

Hydraulic cylinder repair folks, this is for you! These are PU (Polyurethane) rod seals, also known as U-Cup seals of the UN-type. They're designed for hydraulic piston cylinders. The key specs: they handle pressures up to 35 Megapascals (that's really high pressure!), linear speeds up to 0.5 meters per second, and temperatures from -35°C to 100°C. The material is fluororubber (FKM/Viton), which is excellent for resisting oils and fuels. The brand is Goo Better. They come in a range of sizes from 4mm to 28mm (you choose the specific size you need). Brand new in packaging. These seals are critical for preventing hydraulic fluid leaks from the cylinder rod. If your cylinder is weeping oil, a worn rod seal is often the cause. Replacing it can save you the cost of a whole new cylinder. Make sure you get the exact size for your cylinder's rod diameter. A key component for any hydraulic rebuild kit.

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