DBH 5903 radial shaft seal — 88 x 126 x 12

DBH 5903 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 5903 and any equivalents.

The DBH 5903 radial shaft seal is a lip seal that keeps oil or grease in and blocks dust and water from entering around a rotating shaft. With a shaft diameter of 88 mm, housing diameter of 126 mm and height of 12 mm, it fits gearboxes, pumps and medium-sized power transmission equipment. MR Industrial Accessories supplies this brand and can help you confirm the right seal for your lubricant, speed and shaft condition.

This radial shaft seal belongs to the DBH line and carries the code 5903. The Lx design means a single lip with a spring, set up to hold lubricant on one side and keep contaminants out on the other. The elastomer lip and the internal spring ride against the shaft to maintain dynamic contact. The seal presses into the housing and works against the rotating shaft surface.

You will typically find a seal this size in gearboxes, centrifugal pumps, electric motors, rollers and power transmission assemblies. In those positions it does two jobs: retaining oil or grease inside the housing and stopping particles, water or chips from getting in and wearing out bearings and gears. It also serves as a closure on mixer, conveyor and continuous process shafts, where sealing reliability affects how long the equipment lasts.

When selecting and installing a seal, check the shaft dimension, the housing bore and the available height. The shaft surface should be clean, free of burrs and scratches, and hard and smooth enough not to damage the lip. Lubricate the lip before installation and use a tool that presses it in squarely, without striking it. If the shaft shows wear, you can set the seal at a slight axial offset or consider a repair sleeve. Peripheral speed and lubricant type also affect the compound choice.

If you need an equivalent, send the code 5903 or the dimensions 88 x 126 x 12 mm via WhatsApp. A photo of the old seal, the equipment brand or the housing drawing also helps. At MR Industrial Accessories we compare that information against the available options and confirm the best fit. Where space allows, we can review height or diameter variants within the same radial seal category.

To request a quote for the DBH 5903 seal, message us on WhatsApp with the code and the quantity you need. MR Industrial Accessories supplies this brand and can advise on installation, lubricant compatibility and practices that help extend seal life. If you are unsure about the size, send the shaft and housing dimensions and we will help you confirm the replacement.