BOLA Stirrer Bearings, NS 24/40 Ø 10 mm GL 25 PTFE gasket made of PTFE/FPMBOLA Stirrer Bearings Ground joint cone made of PTFE with sealing rings on the outside to prevent sticking of the connection and to reduce danger of breaking glass. 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 Abmessungen: Cone US standard 24 40 For stirrer shaft dia. mm 10 Total length mm 80 Thread of screw cap GL 25