Mechanical seal for sealing a fluid-conducting channel and/or space and method for monitoring the wear of a mechanical seal

Mechanical seal for sealing at least one fluid-conducting channel extending in at least one of a stationary component and a rotating component from the environment,

• the mechanical seal having a slide ring which is supported in a sealing manner in an axial direction against a counter ring and, to compensate for wear on at least one of a front-end seal face of the slide ring and on a counter face of the counter ring against which the slide ring is biased, the slide ring is supported against the counter ring elastically and movably in the axial direction with;
• the mechanical seal having a position sensor for detecting the position of the slide ring in the axial direction;
• wherein, a temperature sensor is provided on a leakage side of the seal face facing away from the channel, the temperature sensor at least indirectly detects a temperature which is dependent on the magnitude of a leakage flow passing from the channel via the seal face.