FBU SEALS KDC stationary double mechanical seal is a standardized, modular cartridge seal built for OEM chemical and process pump builders. Using stationary face compensation technology, it resists thermal deformation and prevents seal-face drop at speeds up to 20 m/s. Rated to 25 bar (standard ≤20 bar), -20~150°C, shaft 24–100 mm, it fits ISO2858 chambers and replaces packing. Wet parts in Duplex steel, 904L or Alloy 276 with SSIC/TC faces handle acid, solvent and hazardous media. Backed by a 3-year warranty.