DBH 5639 radial shaft seal — 38.1 x 57.94 x 12/14

DBH 5639 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 5639 and any equivalents.

A radial shaft seal such as the DBH 5639 keeps lubricant where it belongs and keeps contamination out. It sits between a rotating shaft and its housing, so the lip rides on a 38.10 mm shaft while the 57.94 mm outer diameter presses into the bore. The A 006 design and the 12.00/14.00 mm stepped height suit gearboxes, pumps, motors and transmission equipment running under continuous, moderate duty.

The code breaks down into two parts: DBH 5639 identifies the item, and A 006 describes the design. Sizing follows the usual three-value order: shaft (d) 38.10 mm, housing (D) 57.94 mm, height (h) 12.00/14.00 mm. In other words, the lip contacts a 38.10 mm shaft and the 57.94 mm outside diameter is press-fitted into the housing bore. Two height figures are given because the body has a stepped section, so either mounting dimension applies depending on how far the part is seated.

Seals in this size range show up in gearboxes and reducers, centrifugal pumps, electric motors and power transmission assemblies. In each case the job is the same: hold the oil or grease inside and stop dust, water and particles from travelling in along the shaft. The same size also serves as a secondary closure on bearings and bushings running on 38.10 mm shafts.

Before installing, confirm that the shaft and housing diameters match the values above, check that the lip contact zone is free of burrs and scratches, and lubricate the sealing surface. Press the seal in perpendicular to the shaft and avoid hitting the lip. During replacement, inspect the internal spring and the condition of the housing bore.

Working from an old part with no readable marking? Send code 5639, or the shaft, housing and height measurements taken with a caliper, and we can match a reference. If you are after an equivalent from another brand, the same three dimensions are enough for us to search.