SENSOR

摘要

A sensor (1) comprises a housing (2) defining an inner space (3) and a pass-through opening (4), a sensitive member (5) being accommodated within the inner space and a stem (10) extending, through the pass-through opening, from the outside of the housing the inner space where it interacts with the sensitive member to transmit to the latter a value to be measured. The gap between the pass-through opening (4) and the stem (10) is sealed by means of a seal (8) being in pressing contact with a seal seat (9) formed in the pass-through opening (4) and with the stem (10) and a lubricating material (11) is arranged such as to wet the seal (8) when the sensor is operating.