DBH 5317Pol radial shaft seal — 30 x 42 x 8

DBH 5317Pol is a reference of radial shaft seal, within Seals. Request a quote for 5317Pol via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 5317Pol radial shaft seal is a lip seal that prevents oil or grease leaks and blocks the entry of dust and water at the point where a shaft rotates inside a housing. Its Lx design and its dimensions of 30 mm shaft, 42 mm housing and 8 mm height make it a common replacement part in gearboxes, pumps and electric motors. MR Accesorios Industriales carries it as a brand.

This item is a single-lip seal with designation 5317Pol and standard dimensions: 30 mm shaft diameter, 42 mm housing diameter and 8 mm height. The Lx design indicates a lip and case configuration intended for lubricant retention in a single direction of rotation. The 5317 series groups seals of compact section, and the Pol suffix identifies the compound and lip geometry variant that DBH applies to this size.

Typical applications for a 30 x 42 x 8 mm seal appear on input and output shafts of reducers, centrifugal pumps, electric motors, fans and transmission equipment. In all those cases the function is the same: keep the lubricant inside the assembly and prevent the environment from entering the bearings or gears. It is also used as a secondary closure in split plummer block housings and gear units.

To install it, verify that the shaft has no burrs or deep marks in the contact area and that the housing is clean and free of deformation. Lubricate the lip before inserting it and place the seal with a support tube that presses on the outer diameter, never on the lip. If the equipment operates with a lot of dirt, consider a variant with a dust lip. Selection depends on the type of lubricant, the temperature and the peripheral speed of the shaft.

If you need an equivalent, send us the code 5317Pol or the dimensions 30 x 42 x 8 mm and the type of application. We can look for the same size in another brand, a double-lip variant or a seal with a spring. It is also worth checking the condition of the shaft: if it is worn, it can sometimes be solved with a taller seal or a repair sleeve.

MR Accesorios Industriales carries the DBH brand as a brand within its seal and oil seal line. If you want to confirm alternatives for your equipment, send the code on WhatsApp and we will reply with the option that best suits your installation.