Mechanical Seals API 682 4° Edition

Dual cartridge seal in compliance with standard API 682 4th edition in face-to-back
version.
The balanced dual cartridge solution is ideal for arrangement 2 and 3 or with auxiliary
fluid at atmospheric pressure (buffer) TR6T or pressurised (barrier) TR6D. The two
versions are particularly suitable for toxic or polluting fluids that crystallize when in
contact with the atmosphere or in case of no external washing; the rotary bellows
prevents the problem of spring and dynamic O-ring packing and tolerates axial and
radial movements.