DBH 5120Sil radial shaft seal — 39.42 x 63.55 x 12.7

DBH 5120Sil 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 5120Sil and any equivalents.

The DBH 5120Sil is a radial shaft seal built to hold lubricant in and keep contamination out of rotating assemblies. Its Lz configuration pairs a primary sealing lip with a secondary exclusion lip, so the sealing zone stays protected where dust or dirt is present. With a shaft size of 39.42 mm, a housing bore of 63.55 mm and a 12.70 mm width, it fits applications where axial room is tight. MR Industrial Accessories supplies this brand and can help confirm the correct seal for your equipment.

Reading the designation is straightforward. DBH identifies the seal family, 5120Sil is the specific reference, and the three figures describe the fit: 39.42 mm on the shaft, 63.55 mm in the housing and 12.70 mm across the width. The elastomer lip rides against the rotating shaft while the outer diameter is pressed into the housing bore, which is why this type of seal is a standard replacement item wherever oil or grease has to be contained.

The Lz design adds a second lip alongside the main sealing lip. That extra barrier is what makes the seal useful in dusty plants, around fine chips or in moderately humid conditions, since it blocks particles before they reach the sealing edge. It also tolerates a certain amount of shaft eccentricity or slight misalignment. Gearboxes, pumps, electric motors, drive shafts and process equipment are the usual places where this seal is found.

Selection starts with the three dimensions: confirm shaft, housing and width against the assembly. The shaft should be ground, hard enough to resist lip wear, and free of grooves, burrs or excessive roughness. The housing needs an entry chamfer so the lip is not cut during fitting. Coat the lip with the same oil or grease the equipment runs on, keep the lip facing the lubricant side, seat the seal fully and avoid hitting the elastomer.

If you are looking for a replacement, send the reference 5120Sil or your measured dimensions by WhatsApp. The team checks the designation against the manufacturer's data and can suggest equivalents within the same brand or from other brands in the range, so a sealing part does not keep your equipment down.