DBH 5278Sil radial shaft seal — 60 x 90 x 10

DBH 5278Sil 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 5278Sil and any equivalents.

The DBH 5278Sil is a radial lip seal that keeps oil or grease contained where a rotating shaft passes through a housing. It also blocks dust, water, and other particles from reaching the bearing. Because the lip wears over time, leakage starts once it hardens or scores, so replacing it early protects the bearing.

The seal carries the designation 5278Sil. Its three key dimensions are shaft 60 mm, housing 90 mm, and height 10 mm. The Lx design means a metal case with an elastomeric sealing lip. These three measurements determine whether the seal fits: shaft, housing bore, and housing width. Measure all three with a caliper before ordering; a seal with the same outer diameter but a different height will not seat correctly.

You will find this seal in gearboxes, pumps, electric motors, rollers, and transmission equipment where a shaft turns and lubricant must be retained. It also appears in agricultural machinery, conveyors, and process equipment. In every case, the shaft surface under the lip must be in good condition. A groove or mark at the lip contact point will cause a new seal to leak even when the dimensions are correct.

During installation, follow three points. First, do not strike the lip; press it in evenly using a tube or shim that contacts the metal case, not the elastomer. Second, make sure the housing is clean and free of burrs, and lubricate the lip with the same oil or grease used in the equipment before sliding it onto the shaft. Third, if the shaft shows wear, consider mounting the seal with a slight axial offset so the lip runs on a healthy area.

To request a quote for the 5278Sil, send the part number and the dimensions you measured: shaft, housing, and height. We will review options within the DBH line or from other brands we supply and confirm which one fits without housing modification. We can also verify the Lx design against your original equipment.

MR Industrial Accessories LLC supplies the DBH brand. To move forward, send the part number 5278Sil or your seal dimensions via WhatsApp or email. Our team will reply promptly with a quote and help you choose the best option for your equipment.