DBH 6690Pol radial shaft seal — 30 x 42 x 7

DBH 6690Pol is a reference of radial shaft seal, within Seals. Request a quote for 6690Pol via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 6690Pol radial shaft seal is a lip seal designed for rotating shafts. Its function is to retain lubricant inside the housing and prevent the entry of dust, water or contaminating particles. With dimensions of 30 mm shaft diameter, 42 mm housing diameter and 7 mm height, and an Lz-R design, it is a common replacement part in industrial equipment. MR Accesorios Industriales carries this brand and advises you so you choose the right seal.

This item is a DBH radial shaft seal, identified with the designation 6690Pol. Its standard dimensions are: shaft diameter (d) 30 mm, housing diameter (D) 42 mm and height (h) 7.00 mm. The Lz-R design corresponds to a configuration with sealing lip and spring, intended for rotating shafts. DBH is a brand that MR carries, so you can ask us about this reference and its equivalents.

Radial shaft seals such as the 6690Pol are used in gearboxes, pumps, electric motors, transmission shafts and process equipment. Their mission is twofold: to keep oil or grease inside the assembly and to block the entry of external contaminants. In environments with dust, humidity or frequent washdowns, a seal in good condition extends the life of bearings and gears. It is a wear part that should be replaced at every scheduled maintenance.

To correctly install a 30 x 42 x 7 mm seal, check that the shaft has no burrs or wear and that the housing is clean and free of deformation. Lubricate the lip with the same grease or oil used in the equipment before inserting it. Installation pressure must be applied to the outer face, never to the lip. If the shaft shows a marked track, consider an alternative design. At MR Accesorios Industriales we can guide you according to the type of application.

If you need a seal equivalent to the 6690Pol, the most practical thing is to send us the full part number, the shaft, housing and height dimensions, and a photo of the original part. With that data we check alternatives within the DBH line or other brands we carry. We can also quote the set with seals for other positions of the same equipment. The idea is that you are not left with a single supplier or a single replacement option.

To request a quote for the DBH 6690Pol seal, send us the part number on WhatsApp at MR Accesorios Industriales. We reply with the reference and the alternatives that best fit your equipment. At MR we know the details that make a seal work as it should.