DBH 5581 radial shaft seal — 50.8 x 65.1 x 11.9

DBH 5581 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 5581 and any equivalents.

The DBH 5581 is a radial shaft seal that keeps lubricant in and contaminants out of rotating shaft assemblies. It seats in a cylindrical housing while its flexible lip rides on the shaft. Because it is a wear part, leaks, noise, or shaft play are signs it is time to replace it. MR Industrial Accessories supplies this brand and helps you match the seal to your shaft and housing dimensions.

This seal carries the DBH brand and the code 5581, with design A 159. Its three key measurements are shaft 50.80 mm, housing 65.10 mm, and width 11.90 mm. Together they control how the part sits: the lip contacts the shaft, the outer diameter presses into the housing, and the width sets how far the seal sits in or stands proud of the bore. Confirm all three before ordering, since even a small difference will stop it from seating correctly.

You will find seals of this type in gearboxes, pumps, electric motors, rollers, and transmission equipment. They hold oil or grease inside the assembly and block dust, water, and particles from getting in. In plants, workshops, and production lines, they work on shafts that turn continuously. They also come into play on older machines whose original spare is no longer listed, where a seal of matching size has to be sourced.

Beyond the dimensions, selection depends on shaft speed, working temperature, and the lubricant in use. A lip that is fitted crooked, or a shaft with scratches, will leak even with a new seal. During installation, coat the lip with lubricant, keep it away from sharp edges, and press it in with a tube or sleeve that bears on the outer ring. If the shaft is worn, a sleeve or a seal with an auxiliary lip may be the better route. Clean housing bores and parallel alignment between shaft and housing also affect how long the seal lasts.

If code 5581 is not the right one, or the size does not match your equipment, send the old seal's data: shaft diameter, housing diameter, width, and a photo. With that, we search for an equivalent in the same family. We can also advise on lip design and elastomer material for your fluid and temperature. The exact code is not always necessary; the dimensions alone are usually enough to identify the part.

To request a quote for the DBH 5581 or an equivalent, message us on WhatsApp with the code or the dimensions. MR Industrial Accessories handles technical inquiries and helps you confirm the part is correct before you buy. If you need several units or a replacement for a specific machine, tell us the application and the working environment. That lets us answer more precisely and avoid returns caused by size errors.