Radial shaft seal DBH 1151 — 15.00 x 21.00 x 3.00

DBH 1151 is a radial shaft seal reference, within Seals. Request a quote for 1151 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 1151 radial shaft seal is a lip seal that stops oil or grease from escaping at the point where a shaft passes through a housing. With a 15 mm shaft diameter, 21 mm housing and 3 mm height, it is used in gearboxes, pumps, electric motors and power transmission equipment. Its Lt design combines the sealing lip with a structure intended to retain lubricant and stop dust and water from entering.

This DBH 1151 oil seal has a 15 mm shaft diameter, a 21 mm housing diameter and a 3.00 mm height. The Lt design refers to the geometry of the lip and the metal body, which defines how it runs on the shaft and how it seats in the cavity. It is a radial sealing component: it does not transmit load or torque; its function is to contain the lubricant and prevent contaminants from entering the bearing or mechanism.

It is found in equipment where a shaft rotates inside a housing: gear reducers, variable speed drives, centrifugal pumps, fans, mixers and machine tools. It also appears in low-speed applications and small-diameter shafts, where axial space is limited and a compact seal is required. In all those cases it works alongside bearings, bushings or linear guides, protecting the lubricated area.

For installation, check that the shaft and housing diameters match the 15 mm and 21 mm of this seal, and that the 3.00 mm height fits into the cavity without deforming the lip. Lubricate the lip before inserting it, seat the seal squarely and avoid striking it with pointed tools. If the shaft has burrs or wear, correct it before installation so the seal is not damaged.

If you need a nearby size or an equivalent, send the code 1151 and the dimensions of the seal you are replacing. With that data we review the DBH series and the available alternatives. We can also advise you if the housing or shaft has tolerances different from those of this item. The goal is for you to get the right seal without buying twice.

MR Accesorios Industriales carries the DBH brand as part of its line of seals and oil seals. If you have doubts about the application, send the code 1151 on WhatsApp and we will help you confirm that this seal is the one for your equipment. You can also ask about other sizes in the same family.