https://www.fujischelevator.com/products/elevator-polyurethane-buffer.html Elevator Polyurethane Buffer is a type of safety device installed in elevator systems to absorb the shock and vibration that may be caused by sudden stops or starts of the elevator car during operation. The buffer is typically made of polyurethane, a highly durable and elastic material that can provide an extra layer of protection for both the elevator car and the passengers inside. The polyurethane buffer for elevator is installed at the bottom of the elevator shaft, below the elevator car. It consists of a steel body, which is fixed to the shaft, and a polyurethane pad that compresses and absorbs energy when the elevator car comes to a sudden stop. In addition to reducing noise and vibration during elevator operation, the polyurethane buffer can also provide additional safety features to prevent damage to the elevator system and protect passengers in the event of an emergency.