Uniflon 53 is a non-asbestous sheet sealing material from biaxially orientated PTFE and barium sulphate as filler. Uniflon 53 is suitable for all chemical media across the entire pH range 0 to 14. Uniflon 53 is designed especially for hydrofluoric acid, but not suitable for pure liquid hydrogen fluoride. It can further be used for alkalis, solvents, fuels, water, steam and chlorine. The sheets can be simply cut.