Uniflon 50 color: Blue gasket Description: pure PTFE cross-linking improved PTFE, compression and extension release performance is very good, is the standard and non-standard flange ideal sealing material. Use environment: designed for sealing of non-standard flanges with low bolt load, especially suitable for flanges with glass, ceramic or plastic coating, and sealing of irregular flanges. Suitable for the sealing of almost all chemical mediums except liquid base metal, fluorine and hydrogen fluoride in pH value of 0~14. (refer to chemical corrosion resistance table for specific medium). Certification: FDA 21, CFR 177.1550 specification, Ta-Luft certification, GL classification society, form approval sheet thickness: 0.75 to 6 mm sheet size: 1.0m, x, 1.0m, 1.5m, x, 1.5m, 2.0m, x, 2.0m specifications: please refer to technical parameters