DBH 5144Sil radial shaft seal — 45 x 72 x 10

DBH 5144Sil 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 5144Sil and any equivalents.

When a gearbox, pump or motor starts weeping oil around the shaft, the DBH 5144Sil radial shaft seal is often the part that needs attention. It is a lip seal that keeps lubricant where it belongs and blocks dust, water and other contaminants from reaching the bearing cavity. Its three key dimensions are 45 mm for the shaft, 72 mm for the housing bore and 10 mm for the height. Getting those numbers right is what makes the replacement work.

The designation breaks down simply: DBH is the seal family, 5144Sil identifies the specific profile, and the Lz design means the seal carries a spring-loaded lip. That spring keeps steady pressure against the rotating shaft, which is the usual setup for lubricated rotating equipment. The dimensions to compare against your machine are 45.00 mm shaft diameter (d), 72.00 mm housing diameter (D) and 10.00 mm height (h).

You will find seals of this type in reducer boxes, pumps, electric motors, compressors, line shafts, and agricultural or industrial machinery. Their job is dual: hold the oil or grease inside the bearing area and keep outside contamination from getting in. In dirty, wet or chip-heavy environments, a healthy seal is often what separates a long bearing life from a short one.

Installation matters as much as the part number. Inspect the shaft for burrs, scratches or a worn groove in the lip contact zone, and make sure the housing bore is clean and free of dents. Press the seal in squarely, using a tube or spacer that pushes on the metal case rather than the lip. Lubricate the lip with the same oil or grease the equipment uses before sliding it over the shaft. If the shaft shows a deep groove, a wear sleeve is worth considering.

If you need a different size or an equivalent, send the complete part number, a photo of the old seal and your caliper readings. With that we can search within the DBH line or other brands we carry, and we can also advise you when shaft or housing tolerances look unusual. A dimension measured wrong is a common cause of leaks or a seal that will not seat properly.

To request a quote for the DBH 5144Sil, message us on WhatsApp or email with the part number. MR Industrial Accessories LLC supplies seals and oil seals for many applications and can help you confirm the selection. The exact designation plus your measured dimensions is the surest way to get the right part for your equipment.