Sealing rings on these bearings ensure a perfect sealing. The ground joint no longer sticks, danger of breaking is reduced and the cone can be removed easily from the socket. A special gasket made of PTFE and an FPM o-ring which is compressed by a GL screw cap provide a good sealing of the stirrer shaft. This gasket can be exchanged after wearing. Applications: Suitable for vacuum, perfect bearing for st. steel, glass and BOLA stirrer shafts. Sealing rings on these bearings ensure a perfect sealing. The ground joint no longer sticks, danger of breaking is reduced and the cone can be removed easily from the socket. A special gasket made of PTFE and an FPM o-ring which is compressed by a GL screw cap provide a good sealing of the stirrer shaft. This gasket can be exchanged after wearing. Applications: Suitable for vacuum, perfect bearing for st. steel, glass and BOLA stirrer shafts.