DBH 9950/85 radial shaft seal — 18 x 34 x 8

DBH 9950/85 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 9950/85 and any equivalents.

The DBH 9950/85 is a radial shaft seal built to the Mx design. It presses into the housing while its lip rides on the rotating shaft, holding lubricant in and keeping dust, water and other contaminants out. The designation covers a shaft of 18 mm, a housing bore of 34 mm and a height of 8.00 mm, a combination found in gearboxes, pumps, motors and power transmission assemblies. MR Industrial Accessories supplies this brand and helps you match the right seal to the job.

Reading the number is straightforward: DBH identifies the line, 9950/85 identifies the item, and the Mx designation describes how the lip and metal case are put together. The three measurements that matter are shaft 18 mm, housing 34 mm and height 8.00 mm. Because the lip contacts a moving shaft, the seal is a wear item rather than a permanent part, and it is normally replaced when oil or grease starts escaping or when the area begins to make noise.

Seals in this size range turn up in reducers and gearboxes, centrifugal pumps, electric motors, compressors and transmission units, as well as machine tools, washing equipment and conveyors. In each case the purpose is the same: keep the lubricant where it belongs and shield bearings and bushings from grit and moisture. A leaking or hardened seal lets both jobs fail at once.

Selection depends on more than the three dimensions. Shaft speed, working temperature and the lubricant in use all affect how the seal performs. At installation, the housing bore should be clean and free of burrs, and the shaft surface where the lip runs should show no grooves or scoring. A light film of lubricant on the lip before pressing it in helps, and the seal should go in squarely without hammer blows. Misalignment between shaft and housing shortens seal life, and a worn shaft will damage a new seal.

For an equivalent, send the part number 9950/85 or the measurements of the seal you are replacing. We can search within the same DBH line or across the other brands we carry, keeping shaft, housing and height the same so the fit is correct. If the equipment runs at unusual temperatures or speeds, tell us and we will factor that in. The more detail you provide, the more precise our recommendation.

To request a quote, message us on WhatsApp or by email with the part number or dimensions. We can also assemble a kit together with the bearings or other sealing components on your list.