Radial shaft seal DBH 5903 — 88.00 x 126.00 x 12.00

DBH 5903 is a radial shaft seal reference, within Seals. Request a quote for 5903 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 5903 radial shaft seal is a lip seal for rotating shafts that prevents oil or grease leaks and blocks the ingress of dust and water. Due to its dimensions —88 mm shaft, 126 mm housing and 12 mm height— it is used in gearboxes, pumps and medium-sized power transmission equipment. MR Accesorios Industriales carries this brand and advises you so you choose the correct seal according to the type of lubricant, speed and shaft condition.

This item is a radial shaft seal from the DBH line, identified with part number 5903. Its nominal dimensions are 88 mm shaft diameter, 126 mm housing diameter and 12 mm height. The Lx design corresponds to a single-lip configuration with spring, intended to retain lubricant in one direction and exclude contaminants from the opposite side. The elastomer and internal spring work on the shaft to maintain dynamic contact. It is press-fitted into the housing and seals against the rotating shaft surface.

Typical applications for a seal of this size appear in gearboxes, centrifugal pumps, electric motors, rollers and power transmission equipment. In these assemblies, the seal performs two functions: retaining oil or grease inside the housing and preventing particles, water or chips from entering that accelerate wear on bearings and gears. It is also used as a closure on shafts of mixers, conveyors and continuous process machinery, where sealing reliability defines equipment service life.

To select and install a seal, you must verify the shaft size, housing diameter and available height. The shaft surface must be clean, free of burrs and splines, and with adequate hardness and roughness so as not to damage the lip. It is advisable to lubricate the lip before installation and use a tool that inserts it perpendicularly, without striking it. If the shaft shows wear, one option is to install the seal with a slight axial offset or evaluate a repair sleeve. Peripheral speed and the type of lubricant also condition the choice of compound.

If you need an equivalent or a nearby size, send us part number 5903 or the dimensions 88 x 126 x 12 mm via WhatsApp. You can also send a photo of the old seal, the equipment brand or the housing drawing. At MR Accesorios Industriales we compare this data with the available alternatives and confirm the option that best fits. If space allows, we evaluate height or diameter variants within the same radial seal category.

To request a quote for the DBH 5903 oil seal, write to us via WhatsApp with the part number and the quantity you need. MR Accesorios Industriales carries this brand and can guide you on installation, lubricant compatibility and precautions to extend seal life. If you have doubts about the size, send the shaft and housing dimensions and we will help you confirm the replacement.