DBH 5258 radial shaft seal — 15.87 x 38.07 x 9.52

DBH 5258 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 5258 and any equivalents.

Part 5258 in the DBH line is a radial shaft seal built to hold lubricant in place and keep contaminants out of rotating assemblies. Its Lz profile uses a single lip with a spring, and the seal is pressed into the housing so the lip rides against the shaft. Shaft 15.87 mm, housing 38.07 mm, height 9.52 mm — these three figures define the size and should be checked against the seat before ordering.

The 5258 code fixes the size within the DBH range, while Lz describes the lip geometry: one sealing lip, spring-loaded, made for lubricated rotating shafts. The outer body combines an elastomer that stands up to mineral oils and greases with a metal case that allows press fitting into a bore. Reading the code this way helps when a worn seal carries no legible marking.

Typical locations are covers and housings where a shaft passes through: centrifugal pumps, electric motors, gearboxes, compressors, mixers and transmissions, as well as machine tools and continuous process lines. Two jobs are performed at once — keeping oil or grease where it belongs and blocking dust, water and particles that would otherwise shorten bearing and gear life.

Matching the replacement starts with the three dimensions. The Lz profile suits moderate peripheral speeds and low pressures; equipment running faster or under pressure calls for a different lip configuration. When fitting the seal, coat the lip with the same lubricant used in the unit, seat it square to the housing and keep tools away from the lip edge. A scored shaft or a damaged bore will leak regardless of how new the seal is.

For a quote on 5258, send the old seal's shaft, housing and height measurements, or simply a photo of the part. We can cross it to another brand or series, confirm an alternative with the same design, and help when the original carries no visible brand or the housing shows wear. Message us on WhatsApp with code 5258 and the quantity you need; if the size is unclear, the dimensions are enough for us to identify it. MR Industrial Accessories supplies the DBH brand.