APV 0356171662 is a mechanical shaft seal OEM reference for the APV W pump range. The listed pump models are APV W 20/20, 25/75, 25/200, 30/25, 30/50, 40/20, 50/25. The referenced specification lists a 25 mm shaft diameter, silicon carbide (SiC) rotating and stationary sealing faces, and NBR elastomers. The corresponding KE MOTION HYDRO product reference is NT W.