The best way to cut packing accurately is to focus on a few simple steps:

　　Use a mandrel to cut rings

　　Use a sharp knife

　　Use a forceful cutting motion

　　Sometimes, bad habits that are developed when cutting packing rings can start at a plant and can severely limit packing performance. Training and education will help prevent bad maintenance practices and provide understanding of the importance of the task. Unacceptable practices for cutting packing rings can be handed down from technician to technician because it is hard to see the effect that it has on the sealing failure of the equipment.