DBH 5657 radial shaft seal — 70 x 89 x 12.5

DBH 5657 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 5657 and any equivalents.

The DBH 5657 is a radial shaft seal sized for a 70 mm shaft, an 89 mm housing bore and a 12.50 mm width, built in the Mx design. Seals of this type sit in the housing and wipe against the turning shaft, holding lubricant in and keeping dust, water and particles out. Because the lip is a wear surface, the seal is treated as a replacement item on any scheduled service. MR Industrial Accessories supplies it within its line of seals and oil seals.

The part carries the DBH brand and the number 5657. Reading the size string is straightforward: shaft 70 mm, housing 89 mm, width 12.50 mm. The Mx designation refers to one particular construction layout inside the radial shaft seal family. The outer case presses into the housing, typically a metal bore, which holds the seal in place and stops it from spinning, while the lip rides on the shaft. Once the lip or the shaft surface wears, the seal is simply swapped out.

Typical service locations include gearboxes, pumps, electric motors, rollers and transmission equipment where a shaft passes through a housing. The same seal also turns up on agricultural machinery, material handling equipment and process lines. Its job matters to the bearing and to the lubricant: a worn lip lets grease or oil migrate out and lets grit in, which speeds up wear on bearings and gears. Checking the seal at each planned maintenance interval is the practical habit.

Before fitting a seal, inspect the shaft for burrs or heavy wear along the lip path, and confirm the housing is clean and not deformed. Drive the seal in squarely, using a tube or shim that bears on the outer case rather than on the lip. Coat the lip with the same oil or grease the equipment runs on before seating it. Where the shaft shows a deep groove, look at a different size or a repair sleeve. Selection comes down to the three dimensions plus the design type, not the number alone.

If you need a seal that matches the 5657, the fastest route is to send the shaft, housing and width measurements along with a photo or the number marked on the old part. From that data an equivalent from another brand can be located. Variants can also be reviewed when the equipment runs at elevated speed or temperature. To request a quote, message the part number to MR Industrial Accessories on WhatsApp or by email; the team replies promptly and can suggest equivalents or help with selection.