Radial shaft seal DBH 1155/85 — 12.00 x 27.50 x 5.70/10.70

DBH 1155/85 is a radial shaft seal reference, within Seals. Request a quote for 1155/85 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 1155/85 radial shaft seal is a lip seal designed to retain lubricant and exclude contaminants on rotating shafts. With dimensions of 12 mm shaft, 27.50 mm housing and a stepped height of 5.70/10.70 mm, it is press-fitted into the housing and runs on the shaft with a flexible lip. It is a common wear part in gearboxes, pumps, electric motors and power transmission equipment, where it prevents leaks and extends the service life of bearings and gears.

This item is a radial shaft seal from the DBH brand, identified by part number 1155/85 and design A 372. Its dimensions are 12 mm shaft diameter (d), 27.50 mm housing diameter (D) and a total height of 5.70/10.70 mm (h). The stepped height indicates that the seal has a larger outer diameter lip in one section and a smaller one in the other, which allows it to adapt to housings with a shoulder or to different mounting depths. The sealing lip, generally made of elastomer, is mounted on a metal ring that gives it rigidity.

Radial shaft seals like this one are used in equipment where a shaft rotates inside a housing containing lubricant. Typical applications: gearboxes, centrifugal pumps, electric motors, compressors, machine tools and belt or chain drives. They also appear in rollers and pulleys that rotate on bearings and need to retain grease. In all cases, the seal prevents oil or grease from escaping and dust, water or particles from entering the mechanism.

To install a seal, check that the shaft has no burrs or wear and that the sealing surface is polished. The housing must be clean and free of dents. It is recommended to lubricate the lip before inserting it and to use a tube or socket of the appropriate diameter to push it in without deforming it. Seal selection depends on shaft speed, operating temperature and the type of lubricant. If the original seal has a stepped height, it is advisable to respect that geometry to ensure correct seating.

If you need an equivalent seal or a nearby size, the most practical thing is to send us part number 1155/85 or the shaft, housing and height dimensions by WhatsApp. With that data we can search our DBH seal and radial shaft seal line for a compatible alternative. We can also advise you if the housing accepts a single-height seal or if the stepped design needs to be maintained. MR Accesorios Industriales carries this brand and can advise you according to the equipment where it will be installed.

MR Accesorios Industriales has more than 80 years in the industrial sector, since 1945, and carries seals and radial shaft seals from different brands. If this DBH 1155/85 seal is the one you need, write to us on WhatsApp with the part number and we will send you the quote. If you have doubts about the size or design, send us a photo of the old part or the shaft and housing dimensions, and we will help you identify the right replacement.