DBH 6900 radial shaft seal — 70 x 90 x 13

DBH 6900 is a reference of radial shaft seal, within Seals. Request a quote for 6900 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 6900 oil seal is a radial seal with 70 mm shaft diameter, 90 mm housing and 13 mm height, with Lr design. It is used to retain lubricant and block the entry of dust, water or particles in equipment with a rotating shaft. It is a wear part: when oil loss or dirt ingress appears, it should be replaced. MR Accesorios Industriales carries this brand and advises you on choosing the correct size.

The DBH 6900 is a radial seal with a single lip and the dimensions shown in its designation: 70 mm shaft diameter, 90 mm housing diameter and 13 mm height. The Lr design corresponds to the standard rubber-lip variant, intended for rotating shafts with lubrication. The lip rests on the shaft and closes the passage of oil to the outside; the outer body seats under pressure in the housing. It is a frequently replaced part in pumps, motors and gearboxes.

Typical applications for this seal size are in transmission and pumping equipment: gearboxes, electric motors, centrifugal pumps, mixers and fan shafts. It is also found in agricultural and industrial machinery where the lubricant must be separated from the environment. In all those cases it performs two functions: retain the oil or grease and prevent dust, wash water or chips from entering. If the equipment works with a lot of dirt, it is advisable to check the lip condition more frequently.

To mount a seal you must take care of three points: that the shaft has no burrs or marks, that the housing is clean and free of deformation, and that the lip is lubricated before entering. The seal is installed with the lip facing the lubricant side and is seated with a tube or shim that pushes on the outer ring, never on the lip. If the shaft shows wear in the contact area, the new seal may not seal: in that case you must evaluate a repair sleeve or replace the shaft.

If you need an equivalent, the most practical thing is to send us the code engraved on the old seal, the shaft and housing dimensions, and a photo of the part. With that data we confirm whether the DBH 6900 matches or whether a different height or design is needed. The machine code or drawing number also helps. The seal does not need to be in good condition: the marks on the lip and the ring help identify the variant.

MR Accesorios Industriales carries the DBH brand. If you want to confirm the size or request an alternative, send the code 6900 on WhatsApp and we will reply with the quote. We can also review the assembly together: shaft, housing and lubricant, so that the seal lasts as long as it should.