Dual mechanical ceramic-graphite seal 202-16 for 16 mm fecal/ drainage pump rotor shaft. The outer body diameter is 29 mm, the total height with the rings is 53 mm, the diameter of the stationary ceramic ring (in elastic band) is 28 mm. Compatible with Volta, Optima, Pumps + WQD / WQS 10-12, WQD 8-16-1.1, Furia 1.5 kW, WX15 1500W and many other pumps