The packings in polyurethane type FSL make a dynamics sealing with a double lip on rod. The assembly of gaskets for type FSL for rods is not particularly difficult because the material is elastic and highly tear resistant, which eliminates the risk of damage to the sealing lips during assembly. It is useful though not indispensable, to lubricate the seat and the housing using the same fluid as in the system and chemically compatible lubricant. Conditions of use: Type FSL polyurethane gaskets must be used in working conditions within the following limits. o Pressure 0 to 500 bar (50 MPa or N/mm2); o Temperature: -40 to + 105°C; o Speed up to 0,8 m/sec (50 m/min); o Fluids, mineral hydraulic oils, mineral lubricants.