DBH 6642 radial shaft seal — 25.5 x 40 x 6.5

DBH 6642 belongs to radial shaft seal, part of our Seals range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 6642 and any equivalents.

For rotating shafts that need reliable sealing, the DBH 6642 oil seal is a radial lip seal that keeps lubricant in and contaminants out. It fits a 25.50 mm shaft, a 40.00 mm housing and has a 6.50 mm height. Pressed into the housing and running against the shaft, it is a common component in gearboxes, pumps, electric motors and power transmission equipment, where it protects bearings and prevents leaks.

The DBH 6642 uses an Lz design: a sealing lip with a spring that maintains uniform contact on the shaft. The lip elastomer is made to resist mineral oils and greases, while the metal case holds the seal firmly in the housing. This makes it a standard choice for rotating shaft sealing.

You will find this seal in gearboxes, centrifugal pumps, electric motors, compressors and power transmission equipment. In these applications, it stops lubricant from escaping and blocks dust or water from entering, which helps bearings and gears last longer. It also appears in machine tools and agricultural equipment, where contamination is a constant challenge.

Proper installation matters. Check that the shaft has the right surface hardness and a fine finish, and that the housing is clean and free of burrs. Lubricate the lip before fitting, and use an installation tool that presses on the outer diameter, never on the lip. When selecting a seal, consider shaft surface speed, operating temperature and the fluid being retained. If you are unsure, ask us.

If you need an equivalent, send the full part number or the shaft, housing and height dimensions. We can search for alternatives in other brands or series that do the same job, and we can advise on the most suitable lip design for your application.

To request a quote for the DBH 6642 oil seal or a replacement, send the part number on WhatsApp. We will reply with compatible options. You can also write to us with the dimensions and application details so we can help you choose the right seal.