DBH 8838 radial shaft seal — 12 x 25 x 5

DBH 8838 is a reference of radial shaft seal, within Seals. Request a quote for 8838 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 8838 radial shaft seal is a lip seal designed to close off the passage of lubricant and stop the entry of dust and water on rotating shafts. With a 12 mm shaft diameter, 25 mm housing bore and 5 mm height, and Lz design, it is press-fitted into the housing and runs on the shaft with the lip in contact. It is a wear part: when it starts to leak, it should be replaced before the lubricant escapes and damages the bearing.

This item is a radial shaft seal from the DBH line, identified by the code 8838. Its dimensions are 12.00 mm shaft diameter, 25.00 mm housing bore diameter and 5.00 mm height. The Lz design defines the geometry of the lip and the metal case, and it is what gives it its sealing behavior in rotation. It is a small component, but one of those that determine whether a gear reducer, a pump or a small electric motor lasts or becomes contaminated inside.

Typical applications of a seal of this size appear in equipment with thin transmission shafts: small electric motors, centrifugal pumps, compact gear reducers, gearboxes, machine tools and power transmission equipment in general. It is also used in agricultural implements and in process equipment where oil or grease must be retained and, at the same time, washing water and ambient dust kept out.

To install it properly, the shaft must have no burrs or tool marks: the lip runs there and any scratch opens a leak path. It is advisable to lubricate the lip with the same grease or oil used in the equipment before inserting it, and to place it perpendicular to the shaft, without striking it from the side. If the housing has play or is ovalized, the seal will not seal even if it is new. When selecting, verify that the three dimensions match the shaft, the housing and the available depth.

Send us the actual dimensions taken with a caliper: shaft diameter, housing bore diameter and height. With that data we look for the equivalent seal in the DBH line or in another brand we carry, and we confirm the option before you buy. We can also look at design alternatives if the equipment runs at high speed or temperature.

At MR Accesorios Industriales we carry the DBH line. If you already know this is the seal you need, send us the code 8838 on WhatsApp and we will prepare your quote. If you have doubts, send a photo of the old part or the shaft and housing dimensions, and we will help you identify the correct replacement.