DBH 5903 radial shaft seal — 88 x 126 x 12

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

The DBH 5903 radial shaft seal is a lip seal for rotating shafts that prevents oil or grease leaks and blocks the entry 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 sells this brand and advises you so you choose the right seal according to the type of lubricant, speed and shaft condition.

This item is a radial shaft seal from the DBH line, identified by the code 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, designed to retain lubricant in one direction and exclude contaminants from the opposite side. The elastomer and the 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 of 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 the oil or grease inside the housing and preventing particles, water or chips from entering that accelerate the wear of bearings and gears. It is also used as a closure on shafts of mixers, conveyors and continuous process machinery, where sealing reliability defines the service life of the equipment.

To select and install a seal, you must verify the shaft dimension, the housing diameter and the available height. The shaft surface must be clean, free of burrs and scratches, 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. The peripheral speed and the type of lubricant also condition the choice of compound.

If you need an equivalent, send us the code 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 that data with the applicable options 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 seal, write to us via WhatsApp with the code and the quantity you need. MR Accesorios Industriales sells this brand and can guide you on installation, compatibility with the lubricant and the precautions to prolong the life of the seal. If you have doubts about the size, send the shaft and housing dimensions and we will help you confirm the replacement.