DBH 9856 radial shaft seal — 25 x 34 x 4

DBH 9856 belongs to radial shaft seal, part of our Seals range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 9856 and any equivalents.

Part 9856 is a DBH radial shaft seal built for a rotating shaft of 25 mm, fitted into a 34 mm bore with a 4.00 mm overall height. Its job on the machine is to hold lubricant where it belongs and to keep dust, water and other particles out of the bearing and gear area. Because the lip runs against the shaft, the seal wears over time and is normally replaced once oil weeping or unusual noise shows up. We supply it within our seals and oil seals range.

The code breaks down simply: DBH is the manufacturer's designation, 9856 identifies this particular size in the catalog, and the Lt marking tells you it is a single-lip version intended for lubricated service at moderate speeds. The three figures to match against your equipment are shaft 25 mm, housing 34 mm and width 4.00 mm. These are metric values, so do not read them as inch sizes or assume another series will interchange. Since the lip contacts the shaft directly, installation quality decides how well the seal performs.

Typical homes for a seal like this include gearboxes, pumps, electric motors, compressors and other transmission equipment, as well as conveyors, agricultural implements and hydraulic assemblies where a shaft turns inside a fixed bore. Two tasks are handled at once: keeping oil or grease in, and blocking contaminants from outside. In dirty or damp conditions a sound seal protects the bearings and helps you avoid unexpected stoppages. Compared with the cost of a larger repair, it is a low-cost component.

Before fitting a 9856, inspect the shaft for burrs, scratches or a worn groove and make sure the bore is clean and free of dents. Coat the lip with the same lubricant used in the machine, then press the seal in square to the shaft, using a tube or press that contacts only the outer diameter, never the lip. If the shaft shows a deep groove, a repair sleeve is worth considering. Speed, temperature and lubricant type all influence selection, so ask us if anything is unclear.

When you need a replacement or a cross-reference for the DBH 9856, send the complete code along with the shaft, bore and height measurements and, if possible, a photo of the old part. With that information we can check options in other brands or confirm whether the Lt lip configuration suits your equipment. We can also help if mounting space is tight or if the original seal carries a special detail such as a second lip or a specific elastomer.