DBH 5642 radial shaft seal — 42.4 x 66.9 x 12.8

DBH 5642 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 5642 and any equivalents.

Part 5642 is a radial shaft seal from the DBH line, built to hold lubricant in and keep contaminants out where a shaft passes through a housing. The designation spells out its envelope: shaft 42.40 mm, housing 66.90 mm, width 12.80 mm. It uses the Mx lip arrangement, meaning a primary sealing lip works alongside a second lip that blocks dust and dirt. MR Industrial Accessories supplies this brand and can help you confirm the right seal for the job.

Reading the code is the fastest way to check fit. The three figures in 42.40 x 66.90 x 12.80 mm follow the usual order: the first is the shaft diameter the lip rides on, the second is the bore in the housing, and the third is the overall width. Compare all three against your equipment before ordering, since a close match on two dimensions is not enough.

The Mx configuration pairs a main lip with a secondary exclusion lip, which is what makes this seal useful in dirty or dusty surroundings. The lip compound is chosen to stand up to the oils and greases normally found in industrial machinery.

You will find seals like this on gearboxes, pumps, electric motors, reducers and other power transmission equipment, as well as on agricultural machinery, process lines and conveying systems. The job is always the same: close off the gap where the shaft exits the housing so grease stays inside and grit stays outside, with little attention needed once it is fitted.

Installation decides how long the seal lasts. Check that the shaft and bore match the stated dimensions, then clean the shaft and remove any burrs or nicks. Lubricate the shaft and the lip, press the seal in square to the shaft, and use a proper driver so the lip is not cut or rolled. Rotation speed, running temperature and the lubricant in use all affect service life and should guide your selection.

If you are replacing a worn seal, send part number 5642 or the dimensions read off the old part. The team can cross it to an equivalent in the seal range, checking dimensions and lip design, and can point you to other lip configurations when contamination levels or shaft speed call for them.