DBH 8657Pol radial shaft seal — 27 x 43 x 9

DBH 8657Pol 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 8657Pol and any equivalents.

The DBH 8657Pol is a radial shaft seal built for rotating shafts, where it keeps lubricant in and contaminants out. Its three key dimensions are a 27 mm shaft, a 43 mm housing bore and a 9.00 mm width, and it seats with a press fit in covers, gearboxes and motors. In maintenance work, this seal is what stands between bearings and gears and the premature wear that comes from leaks and dirt ingress. MR Industrial Accessories supplies it within its seal range.

This seal follows the Lx design: a sealing lip backed by a stainless steel spring. The elastomer body is nitrile rubber (NBR), which handles moderate operating temperatures and stays compatible with mineral oils and greases. Its outer metal case holds the seal firmly in the housing. As a standard item in the radial shaft seal category, it suits shafts turning at the peripheral speeds typically seen in industrial equipment.

You will find it in gearboxes, centrifugal pumps, electric motors, compressors, fans, and belt or chain drives. Process equipment, conveyors and agricultural machinery also use it. In each case the job is the same: stop lubricant from escaping and block dust, water and particles from getting in, which helps bearings and gears last longer. It is a common replacement item in preventive maintenance programs, changed out as part of normal wear.

When selecting this seal, match the shaft and housing dimensions to the equipment. The shaft surface should be ground and free of burrs, with a recommended minimum hardness of 45 HRC and a roughness Ra between 0.2 and 0.8 µm. The housing needs an entry chamfer so the lip is not damaged during installation. Coat the lip with compatible grease before pressing it in, use a proper installation tube to seat it with even pressure, and never strike the seal directly.

To request a quote for part number 8657Pol, contact us. If you need an alternative, we can look for an equivalent in another brand or series as long as it keeps the 27x43x9 mm dimensions and the same design type. For a faster quote, send the part number by WhatsApp along with a photo of the old seal or caliper measurements. We help you choose the option that fits your application.