DBH 8641 radial shaft seal — 34 x 55 x 11

DBH 8641 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 8641 and any equivalents.

The DBH 8641 is a radial shaft seal sized 34 x 55 x 11 mm with an Lx design. It keeps lubricant in and contaminants out where a rotating shaft passes through a fixed housing, making it a common replacement item in gearboxes, pumps, motors and similar power transmission assemblies.

Reading the designation: shaft 34 mm, housing 55 mm, height 11.00 mm. The Lx code points to a single lip with a spring, a configuration intended for lubricated rotating shafts. The elastomer lip bears on the shaft while the spring keeps contact pressure as wear occurs. The outer case is metal, and the elastomer is formulated to handle ordinary industrial oils and greases. This is a standard catalog part, not a made-to-order component.

You will find this seal in gear reducers, centrifugal pumps, electric motors, compressors, and belt or chain drives. It also appears in machine tools, food processing equipment and hydraulic circuits where lubricant must stay separated from the surroundings. In every case the seal runs against a rotating shaft and sits in a stationary housing. How long it lasts depends largely on how cleanly it was installed and on the finish and condition of the shaft surface.

Before installation, inspect the shaft for burrs, scratches or a worn contact band. Coat the lip with the same oil or grease used in the unit. Drive the seal in squarely with a tube or press that pushes on the outer edge, never on the lip. Where the housing has a shoulder, seat the seal to the correct depth. When choosing a replacement, confirm shaft size, housing bore, height and design; if the shaft is worn, an auxiliary lip or a repair sleeve may be the better route.

To get a quote on code 8641, send the shaft, housing and height measurements along with the quantity, or an equivalent from another brand. A photo of the old seal or the assembly drawing also works. We cross-check the manufacturer's data and come back with the direct alternative or a variant in the same Lx design.

DBH is one of the seal lines MR Industrial Accessories supplies. If 8641 is not the size you need, message us on WhatsApp or email with the code or dimensions and we will help you locate the right seal and advise on selection and installation.