Tail sealants are injected continously between the rows of brushes to protect the TBM against the ingress of soil, water, grout or dust by sealing the tail brush system. MYS RSF group acts as a barrier to mortar, water and soil and is resistant to washout.Moreover, its seamless ability to adhere to any damp surfaces helps guarantee a good pressure control. This product is specifically designed to ensure the safety of the personnel, the environment and the equipment. This excellent sealant is partly based on renewable raw materials.