Carbon vanes are an essential component in oil-free vacuum pumps and compressors, providing superior cushioning and lubrication for optimal machine efficiency. Sliding vanes are often made of materials capable of self-lubrication so they can slide easily inside their rotor slots and against the casing

A carbon brush is a sliding contact used to transmit electrical current from a static to a rotating part in a motor or generator, and, as regards DC machines, ensuring a spark-free commutation.