Sealed crown for watch casing

摘要

The sealing device for a control member (17) is provided with a shaft (16) passing through a sealed casing and comprising a tube (1) driven into a bore (3) of the casing (4). A shaft (16) of the control member (17) is engaged in the tube (1) and at least one joint (18, 19) ensures normal sealing between this tube and this shaft. It comprises a compression key (6) screwed on the tube (1) comprising an upper portion (8) overlying the tube (1) and surrounding the shaft (16) of the control member (17). A compression joint (15) is disposed in the space comprised between the upper portion (8) of the compression key, the tube (1) and the shaft (16).