Our products are designed for user-friendly installation, optimal function and long service life. Our R & D activities, advanced quality management system, in-house testing facilities and in-depth engineering expertise ensure that our seals meet the most demanding customer expectations. Its materials as Seal face: Carbon graphite resin impregnated (B); Seat G9: Silicon carbide (Q1, Q2); Special cast CrMo steel (S), Aluminium oxide (V). The advantages of John crane types 2100 mechanical seal such as Economical seal solution, No damage of the shaft by set screws, Short installation length possible (G16). Meanwhile, it also is featured as: for plain shafts, Single seal, Unbalanced, Conical spring rotating and Dependent on direction of rotation.