Multi-spring balanced, rotating seal AESSEAL with a wedge secondary sealing element made of PTFE M04-A-VP-04Z0 paired with a fixed part S010-DVQ-0380. The seal on the stepped shaft is the movable part by 43 mm, the fixed part by 38 mm. Friction pairs are graphite on silicon carbide. Available for shaft diameters of 20...100 mm. Analog Burgmann BT-C56.KB, John Crane T59B, Sterling 259B, BTS R-59B