DBH 9159 radial shaft seal — 40 x 85 x 10

DBH 9159 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 9159 and any equivalents.

The DBH 9159 is a radial shaft seal that keeps lubricant in and contaminants out where a shaft passes through a housing. Its size is defined by a 40.00 mm shaft, an 85.00 mm housing bore and a 10.00 mm height, and it uses the Lx design. You will find it in gearboxes, pumps, motors and transmission equipment where bearings need protection and leaks must be avoided.

This seal belongs to the DBH line and is identified by part number 9159. The three dimensions to check are shaft 40.00 mm, housing 85.00 mm and height 10.00 mm. The Lx design means a single lip with a spring, intended for rotating shafts that run with lubrication. The elastomeric lip contacts the shaft while the metal case is press-fitted into the housing. Because it is a wear part, replace it when you see lubricant leaking or contaminants getting in.

Seals of this size are common in gearboxes, speed reducers, centrifugal pumps, electric motors, compressors and belt- or chain-driven transmission equipment. In each case, the seal closes the gap where the shaft exits the housing, holding oil or grease in and keeping dirt and moisture out. You will also find them in machine tools, conveyors and agricultural or road equipment that rely on rotating shafts and lubricated bearings.

When installing a radial shaft seal, inspect the shaft for burrs, deep scratches or wear at the lip contact area. Clean and lubricate the shaft surface before sliding the seal on. The housing bore should be machined to the correct tolerance and free of steps that could deform the case. Use a tube or socket with an outer diameter close to that of the seal and tap only on the metal ring, never on the lip. If the shaft shows a groove or marked wear, you may need to replace the shaft or position the lip differently.

If you need an equivalent size or a different lip design, send part number 9159 or the dimensions 40 x 85 x 10 mm along with the application details. MR Industrial Accessories can look for an alternative in the same DBH line or from other brands we supply, confirming the data before quoting. We can also help if the housing or shaft has unusual tolerances, or if the original seal has a special setup such as a double lip or a lip with a dust guard.