Radial shaft seal DBH 8251 — 54.00 x 73.50 x 8.00

DBH 8251 is a radial shaft seal reference, within Seals. Request a quote for 8251 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 8251 radial shaft seal is a lip seal that mounts on the shaft and closes against the housing to retain lubricant and block the entry of dust, water or particles. Its dimensions of 54 mm shaft, 73.50 mm housing and 8 mm height place it in medium-sized transmission and rotating equipment. It is a wear part: when oil loss or dirt ingress appears, it is replaced. MR Accesorios Industriales sells it as official brand DBH.

This item is a seal from the DBH line, identified by part number 8251. Its published attributes are: shaft diameter 54 mm, housing diameter 73.50 mm and height 8.00 mm. The Lx design corresponds to the geometry of the lip and the metal body, which defines how it rests on the shaft and how it is fixed in the cavity. With these three data points you can verify direct interchangeability against the seal you are removing from the equipment.

Radial shaft seals of this size are used in gear reducer boxes, pumps, electric motors, transmission shafts and process equipment where there is continuous rotation and lubricant that must be contained. They also appear in old or imported machines where the exact size is not the most common on the market. In all these cases, the seal performs two functions at once: retaining the oil or grease and preventing contamination from entering from the environment.

To install it properly, the shaft must be clean, free of burrs or tool marks, and the housing free of remnants of the previous seal. It is advisable to lubricate the lip with the same grease or oil used in the equipment before seating the part, and to use a tube or socket that presses on the outer diameter, never on the lip. If the shaft has wear or a groove, the new seal may not seal even if the size is correct: in that case you must evaluate a repair sleeve or replace the shaft.

If you cannot find part number 8251 or need a nearby size, send us the shaft, housing and height dimensions along with a photo of the old seal. The code engraved on the metal body also works. With that data we look for the equivalent in DBH or another brand of the same size, or the closest one if adaptation is required. The part number does not need to be identical: what matters is that the three diameters and the lip type match.

To request a quote for the DBH 8251 oil seal, write to us on WhatsApp with the part number and quantity. If you have doubts about the Lx design or about compatibility with your equipment, send the dimensions and a photo and we will review it. MR Accesorios Industriales sells this brand and can offer you alternatives within the same seals category.