The packings in polyurethane type FS are indicated for the sealing on rod with asymme-tric lips. The assembly of gaskets type FS 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 some fluid as in the system and chemically compatible lubricant. Condition of use Type FS polyurethane gaskets must be used in working conditions within the following limits. Pressure 0 to 500 bar (50 MPa or N/mm2) Temperature: -40 to + 105°C Speed up to 0,8 m/sec (50 min) Fluids, mineral hydraulic oils, mineral lubricants