DBH 6181 radial shaft seal — 50 x 65 x 8

DBH 6181 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 6181 and any equivalents.

A radial shaft seal that keeps lubricant where it belongs and keeps dust, water and particles out of the bearing cavity, the DBH 6181 is built to the 6181 designation with an Lx lip and case arrangement. Its nominal envelope is 50.00 mm on the shaft, 65.00 mm in the housing bore and 8.00 mm wide. Because the lip runs against a rotating surface, this is a wear item: once seepage or looseness shows up, replacement is the practical fix. MR Industrial Accessories supplies the DBH line and can help you match the seal to your application.

The 6181 code describes a single-lip seal with a spring, molded in elastomer over a metal case. The Lx configuration refers to how the lip and outer case are formed, which suits press-fit installation into a cylindrical housing bore. The three figures that identify the part are the shaft diameter (d) at 50.00 mm, the housing diameter (D) at 65.00 mm and the height (h) at 8.00 mm.

Typical service covers gearboxes, centrifugal pumps, electric motors, conveyor rollers, mixers and other power transmission assemblies, as well as agricultural equipment such as seeders and combine harvesters. In each case the seal does two jobs at once: it holds oil or grease in the sump and slows the migration of dirt toward the bearings.

When ordering a replacement, confirm all three dimensions against the part being removed. Inspect the shaft surface as well; scratches, burrs or a worn groove under the lip will prevent a proper seal no matter how good the new part is. Coat the lip with the same lubricant used in the equipment, seat the seal square to the shaft and press it in without hammering on the lip.

If your unit runs at elevated pressure or shaft speed, tell us and we will review whether a different design is a better fit. Equivalents can also be sourced when the bore or shaft tolerances differ from the original.

DBH seals form part of our seals and oil seals range. If you have a question about the lip compound or fluid compatibility, send the code 6181 or the 50x65x8 mm dimensions over WhatsApp and we will come back with a quote and our recommendation.