Radial shaft seal DBH 5278Sil — 60.00 x 90.00 x 10.00

DBH 5278Sil is a radial shaft seal reference, within Seals. Request a quote for 5278Sil via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 5278Sil oil seal is a radial lip seal, designed to close off the passage of oil or grease at the point where a shaft rotates inside a housing. Its function is to retain the lubricant on the inner side and stop the entry of dust, water or particles that wear down bearings and bushings. It is a wear part: when the lip hardens or becomes marked, leakage begins and it should be replaced before damage reaches the bearing.

This oil seal is identified by its designation 5278Sil and by its dimensions: shaft diameter of 60 mm, housing diameter of 90 mm and height of 10 mm. The indicated design is Lx, which corresponds to a lip seal with a metal case and an elastomeric sealing lip. Those three dimensions are what define whether the part fits your housing or not: the shaft, the housing and the housing width. Before ordering it, you should measure all three with a caliper, because a seal with the same outer diameter but a different height does not seat the same way.

Typical applications are gearboxes, pumps, electric motors, rollers and transmission equipment where there is a shaft rotating with lubricant to be retained. It also appears in agricultural machinery, conveyors and process equipment. In all those cases the seal works against a shaft surface that must be in good condition: if the shaft has a groove or a mark right where the lip rests, the new seal leaks there even if the dimensions are correct.

For assembly, keep three things in mind. First, the lip is not struck: it is seated evenly and inserted with a tube or shim that pushes on the case, not on the elastomer. Second, the housing must be clean and free of burrs, and the lip should be lubricated with the same grease or oil as the equipment before sliding it onto the shaft. Third, if the shaft shows wear, you can evaluate mounting the seal with a slight axial offset so that the lip rests on a healthy area.

If you cannot find the 5278Sil or need a nearby size, the most practical approach is to send us the part number and the dimensions you measured: shaft, housing and height. With that we review alternatives within the DBH line or from other brands we carry, and we confirm which option fits without you having to modify the housing. We can also verify the Lx design against the one your original equipment has.

MR Accesorios Industriales offers the DBH brand as an official brand. If you want to move forward, send the part number 5278Sil or the dimensions of your oil seal via WhatsApp and we will send you the quote with the option that best suits your equipment.