DBH 9854 radial shaft seal — 55 x 85.8 x 12

DBH 9854 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 9854 and any equivalents.

A radial shaft seal in the DBH 9854 size, this lip seal sits on the rotating shaft and closes against the housing bore, holding lubricant in and keeping dust, water and particles out. Because it fits a 55 mm shaft, an 85.80 mm housing and a 12.00 mm height, it suits medium-size shafts. Gearboxes, pumps, electric motors and transmissions running at moderate speed with permanent lubrication are the usual homes for this seal.

The item is identified by the code 9854 and belongs to the DBH line. Read the size as shaft 55 mm, housing 85.80 mm, height 12.00 mm. The Lx designation describes how the lip and metal case are put together, a configuration meant for rigid housings and shafts with a fine finish. The elastomer lip wipes against the shaft while the outer diameter holds the fit in the bore, so the part drops into equipment already built for this size.

Seals of this size show up in gearboxes, speed reducers, centrifugal pumps, induction motors, transmission shafts and continuous process lines. They also appear in machine tools, compressors and material handling equipment. In every case the job is the same: keep oil or grease where it belongs and block contamination from the outside. Service conditions are moderate shaft speed and moderate working temperature.

Before pressing a seal in, inspect the shaft for burrs, splines or a worn contact band, and make sure the housing bore is clean and undistorted. Coat the lip with lubricant, then drive the seal in with a tube of the right diameter, applying force on the outer edge rather than the metal case. The three dimensions plus the lip design decide whether a given seal is right, since speed, pressure and lubricant type all have to line up.

For an equivalent, send the code 9854 together with the shaft, housing and height measurements, and add a photo or sample of the seal you are replacing. That is enough for us to look at options in the same seal category and confirm the closest match. We can also tell you what to do when the housing has a shoulder or the shaft is worn and a repair size deserves consideration.