Radial shaft seal DBH 5251 — 19.00 x 35.00 x 10.00

DBH 5251 is a radial shaft seal reference, within Seals. Request a quote for 5251 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 5251 oil seal is a single-lip radial seal that mounts on the shaft and seals against the housing to retain lubricant and stop the entry of dust, water or particles. Due to its dimensions of 19 mm shaft, 35 mm housing and 10 mm height, and its Lx design, it is a commonly used part in small gearboxes, pumps, electric motors and power transmission equipment running at moderate speeds. MR Accesorios Industriales carries it as an official brand within its seals line.

This item is a DBH radial shaft seal with designation 5251. Its published attributes are: shaft diameter 19 mm, housing diameter 35 mm, height 10.00 mm and Lx design. The Lx design corresponds to a single sealing lip with an outer metal body, intended for rigid housings and shafts with a good surface finish. The lip works with slight interference on the shaft to generate the dynamic seal, while the outer diameter is fixed by interference in the housing. It is a frequently replaced part with a relatively low cost within maintenance.

Typical applications for a seal of this size appear in small gearboxes, worm gear reducers, low-power centrifugal pumps, medium-sized electric motors and belt or chain drive equipment. It is also found in machine tools, small screw compressors and process equipment where an oil bath must be separated from an environment with dust or moisture. In all these cases it performs two functions: preventing lubricant leakage to the outside and preventing contaminants from entering the bearing or gear.

To install it properly, first verify that the shaft has no burrs, deep scratches or wear in the lip contact area: a marked shaft ruins the new seal within a few hours. Clean the housing and lubricate the lip with the same grease or oil used in the equipment before inserting it. Place it perpendicular to the shaft, without hitting the lip, using a tube or shim that rests on the metal body. If the housing has a shoulder, respect the seating depth so that the lip does not sit outside the track. If in doubt about selection, always compare the three dimensions and the design type.

If you need a nearby size or an equivalent, the fastest way is to send us the code 5251 along with the shaft, housing and height dimensions shown on the old part or on the drawing. With that data we search within the DBH line and other brands we carry for the seal that matches in diameters, height and design. We can also advise you if the Lx design is not suitable for your application and it is better to switch to another type of lip or a seal with a dust guard.

MR Accesorios Industriales carries the DBH brand as an official brand within its seals and oil seals catalog. If you have the seal in front of you, send code 5251 via WhatsApp and we will quote it. If you do not have it, send us the dimensions and the type of equipment, and we will help you identify the correct part.