Heavy-Duty Arm Cylinder Seal Kits: High-Pressure Repair Solutions for Excavator Sticks

Is your excavator experiencing arm drift or visible oil weeping from the stick cylinder head? A worn arm cylinder seal kit is often the primary cause of hydraulic pressure loss, affecting your machine's digging force and precision. BeeSpareParts offers high-quality aftermarket seal kits engineered to eliminate internal bypass and external leaks.

Our compatible seal solutions are manufactured with premium 95 Shore A Polyurethane (PU) and Nitrile (NBR), offering superior resistance to the constant shock loads and high-frequency friction typical of excavation. These direct-fit kits include all necessary rod seals, piston seals, wipers, and O-rings for a professional, leak-free rebuild.

Whether you need a replacement for CAT, Komatsu, or Volvo equipment, our parts are factory-tested for pressure integrity to ensure your machine stays productive in the toughest conditions.

Key Performance Benefits:

• Stop Arm Drift: High-performance piston seals maintain pressure to keep the stick locked in position under load.

• Extreme Durability: Specialized materials provide excellent thermal stability and resistance to mud and grit.

• Precise Compatibility: Tailored kits designed to fit for CAT 320D, Komatsu PC200, and Volvo EC210 models.