DBH 8657 radial shaft seal — 27 x 43 x 9

DBH 8657 is a reference of radial shaft seal, within Seals. Request a quote for 8657 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 8657 radial shaft seal is a lip seal mounted between a rotating shaft and a fixed housing to retain lubricant and block the entry of dust, water or particles. Its dimensions of 27 mm shaft diameter, 43 mm housing bore and 9 mm height place it in the compact sealing range, common in pumps, electric motors, gearboxes and transmission equipment. MR Accesorios Industriales carries this brand and advises you on choosing the right seal for your application.

This item is a seal from the DBH line, identified by part number 8657. Its dimensions are 27.00 mm shaft diameter (d), 43.00 mm housing bore diameter (D) and 9.00 mm height (h). The Lx design corresponds to a single-lip configuration with a spring, intended for rotating shafts with lubrication. The elastomeric lip runs on the shaft and the metal case is interference-fitted into the housing. It is a wear part: when the lip hardens, cracks or lets oil through, it should be replaced before the damage reaches bearings or gears.

Typical applications for a seal of this size include centrifugal and gear pumps, low and medium power electric motors, gear reducers, drive shafts, mixers and process equipment. It is also used in machine tools, compressors and hydraulic systems where the lubricant must be separated from the environment. In all these cases it performs two functions: preventing oil or grease leaks and stopping the entry of contaminants that accelerate wear on bearings and bushings.

To install it correctly, check that the shaft diameter is within tolerance and free of burrs, and that the housing has the right finish and concentricity. Lubricate the lip before inserting it and use an installation tool that presses on the case, never on the lip. If the shaft shows a worn track, consider a seal with the lip in a different position. Selection depends on speed, temperature, type of lubricant and system pressure.

If you need an equivalent, send us part number 8657 along with the shaft, housing and height dimensions, and a photo of the old seal if you have it on hand. The part number stamped on the part or the equipment drawing also works. With that data we look for alternatives in the same brand or in other lines we carry, respecting the dimensions and design type. If space allows, we can evaluate a double-lip seal or one with a dust guard.

MR Accesorios Industriales carries seals, bearings, power transmission and lubricants. To request a quote for the DBH 8657 oil seal or ask about an equivalent size, write to us on WhatsApp with the part number and dimensions. We will reply with the option that best suits your equipment.