Radial shaft seal DBH 9856 — 25.00 x 34.00 x 4.00

DBH 9856 is a radial shaft seal reference, within Seals. Request a quote for 9856 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 9856 radial shaft seal is a lip seal designed for 25 mm rotating shafts, with a 34 mm housing and 4 mm height. Its function is to retain lubricant inside the assembly and prevent the entry of dust, water or particles that could damage bearings and gears. It is a wear part that should be replaced when oil loss or noise appears. MR Accesorios Industriales carries it as part of its seals and oil seals line.

This item is a DBH radial shaft seal, identified by code 9856. According to the data sheet, it corresponds to a 25 mm diameter shaft, a 34 mm housing and a 4.00 mm height. The Lt design indicates a single-lip configuration, suitable for applications with lubricant and moderate speeds. The 9856 nomenclature is DBH's commercial designation for this size, and it should not be confused with inch dimensions or other series. It is a precision part that works in direct contact with the shaft, so its correct installation is key to preventing leaks.

Radial shaft seals such as the DBH 9856 are used in gearboxes, pumps, electric motors, compressors and transmission equipment. They also appear in agricultural machinery, conveyors and hydraulic systems where there are shafts rotating inside a fixed housing. Their mission is twofold: to retain the oil or grease and to act as a barrier against external contaminants. In dusty or humid environments, a seal in good condition extends bearing life and prevents unplanned downtime. It is an inexpensive part compared to the cost of a major failure.

To install a DBH 9856 seal, check that the shaft has no burrs or wear and that the housing is clean and free of dents. Lubricate the lip with the same oil used in the equipment before inserting it, and place the seal perpendicular to the shaft, without tilting it. Use a tube or press that bears on the outer diameter, never on the lip. If the shaft has a deep groove, consider a repair sleeve or a nearby size. Selection depends on speed, temperature and the type of lubricant; if in doubt, ask us with your equipment data.

If you need a seal equivalent to the DBH 9856 or a close size, the most practical thing is to send us the full code, the shaft, housing and height dimensions, and a photo of the part. With that data we can look for alternatives in other brands or confirm whether the Lt design is suitable for your application. We can also advise you if space is limited or if the original seal has any particular feature, such as a double lip or special material. We work with in-house manufacturing in other lines.

To request a quote for the DBH 9856 seal or ask about a similar size, send us the code on WhatsApp at MR Accesorios Industriales. We reply with the alternatives that best fit your equipment. More than 80 years of experience in bearings, seals and power transmission allow us to help you choose the right part and avoid premature failures. Write to us and we will advise you.