DBH 5478Sil radial shaft seal — 101.6 x 126.95 x 12.7

DBH 5478Sil 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 5478Sil and any equivalents.

The DBH 5478Sil is a radial shaft seal designed to retain lubricant and block contaminants where a shaft rotates inside a housing. With a 101.60 mm shaft diameter, 126.95 mm housing diameter and 12.70 mm height, it fits transmission equipment and heavy machinery where a worn seal needs replacement without housing modification. MR Industrial Accessories supplies this brand and quotes by part number.

This seal belongs to the DBH line and carries the identification 5478Sil. Its dimensions are shaft 101.60 mm, housing 126.95 mm and width 12.70 mm, with Lx design. The Lx designation refers to a single-lip seal with a metal case and sealing lip, built to hold oil or grease in place. The Sil suffix identifies the lip compound variant, which influences how the seal behaves with different temperatures and media.

Seals of this size are commonly found in gearboxes, pumps, conveyor rollers, transmission shafts and continuous-process equipment. In those locations, the seal keeps lubricant from escaping and stops dust, water or particles from entering, which would otherwise speed up wear on bearings and gears. Because it is a wear part, inspect it whenever the assembly is opened and replace it if the lip is hardened, cut or has lost elasticity.

During installation, check that the shaft is free of burrs and machining marks and that the housing is clean and undistorted. Apply the same oil or grease used in the equipment to the lip before fitting, and use a flat driver to avoid twisting the case. The 12.70 mm height should sit flush or against the housing shoulder. If the shaft shows wear, a seal with the lip in a different position can help avoid repeating the failure.

To request a quote for part number 5478Sil, send the shaft and housing dimensions, a photo of the part and the lubricant type used. With that information, we can look for an alternative within the same DBH line or from another brand we supply, always confirming dimensions and design before quoting. We can also advise whether the housing accepts a seal of a different height.

MR Industrial Accessories supplies the DBH brand. If you already have the seal part number, contact us by WhatsApp or email and we will provide a quote with the details you need. If you are unsure of the size, tell us the equipment it is mounted on and we will help identify it.