Spider Coupling Pad, or element, is the central component of the coupling. It is typically made from an elastomeric material such as polyurethane, hytrel, or rubber. Spider Shape: The Spider Coupling Pad element resembles a spider or X-shaped structure with multiple legs. These legs provide flexibility and allow the coupling to compensate for angular, parallel, and axial misalignment between the connected shafts. Metal Hubs: The spider element is sandwiched between two metal hubs, which are attached to the shaft ends. These hubs are usually made from aluminum, steel, or stainless steel and have a bore for shaft mounting and screws or clamps to secure them.