By absorbing and transmitting vibration, it reduces the noise and vibration of pipelines and mechanical equipment, thereby improving the stability and service life of the equipment. It is mainly used for pipeline vibration isolation and noise reduction, displacement compensation, and can be applied to the installation method of connecting one end to the pipeline flange and the other end to the pipeline welding. It can compensate for the installation error of the pipeline and transmit the axial thrust to the entire pipeline during operation, but it cannot absorb the axial displacement.