DBH 9388 radial shaft seal — 48 x 90 x 8

DBH 9388 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 9388 and any equivalents.

The DBH 9388 is a radial shaft seal built for rotating equipment where lubricant has to stay in and contamination has to stay out. Its three key measurements are 48 mm on the shaft, 90 mm in the housing bore, and 8 mm of axial height. The Lx configuration combines a flexible sealing lip with a metal outer case, which allows the seal to be pressed into a cylindrical housing and to keep contact with the shaft as it turns.

Reading the code is straightforward once you know the layout. The 9388 identifies the specific seal in the DBH line, and the numbers that follow describe the geometry: shaft side 48 mm, housing side 90 mm, section height 8 mm. This is the information a maintenance planner needs when pulling a replacement from the shelf or matching a seal that has already been removed from a gearbox, pump or motor. DBH is one of the seal brands MR supplies, so the same designation can be quoted directly.

Seals in this size range show up in gearboxes, centrifugal pumps, electric motors, line shafts and general process equipment. In every case the job is the same: hold oil or grease inside the housing and block dust, water and fine particles from reaching the bearing. Because the lip rides on the shaft, it wears over time. Dripping, a visible film of oil around the housing, or a change in running noise are the usual signs that replacement is due.

Installation quality decides how long the seal lasts. The shaft should be clean, free of burrs and scratches, and the sealing surface should have the correct roughness for a lip seal. Coat the lip with the same lubricant used in the machine before sliding it into place. The housing bore must be smooth and undamaged. When choosing a replacement, dimensions are only the starting point; peripheral speed, operating temperature and the fluid being sealed also affect the selection.

To quote the 9388, or any seal measuring 48 x 90 x 8 mm, send the part number or the dimensions through WhatsApp or email. Cross-references from other manufacturers are welcome, and we can also check on variants such as a spring-loaded lip, a double lip or special elastomers. MR Industrial Accessories supports industrial maintenance teams across the United States and in several Latin American countries, and we help confirm the correct part before you order.