DBH 1240Vit radial shaft seal — 55 x 72 x 8/13.3

DBH 1240Vit 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 1240Vit and any equivalents.

The DBH 1240Vit is a radial shaft seal sized for a 55 mm shaft and a 72 mm housing bore, with a stepped height of 8.00/13.30 mm and an A 400 design. That taller section suits housings with a deeper bore or a shoulder, where the sealing lip needs to sit correctly on the shaft. Its job is to hold lubricant inside rotating equipment and keep dust, water and particles out. MR Industrial Accessories supplies this seal as one of the brands it carries.

The reference breaks down simply: DBH identifies the seal line, 1240Vit is the item code, and the three figures describe where it fits. Shaft 55 mm, housing 72 mm, width 8.00/13.30 mm. The A 400 design refers to a metal-bodied seal with a sealing lip that is pressed into the housing. The two-part height means the seal has a deeper profile than a standard single-width part, which helps the lip stay stable at speed and locate properly in a stepped bore.

Seals in this size range turn up in gearboxes, centrifugal pumps, electric motors, transmission shafts and other process equipment that runs continuously. In every case the function is the same: retain oil or grease in the assembly and block contamination from outside. A shaft seal is a wear item. With running time the lip hardens or picks up marks, and lubricant loss or ingress follows.

Installation calls for a few checks. The 55 mm shaft surface should be free of burrs and deep marks, and the 72 mm bore clean and undistorted. Coat the lip with the same oil or grease used in the equipment before seating it, then drive it in evenly on the outer ring, never on the lip. If the shaft is already worn, an offset-lip seal is worth considering so the new lip rides on fresh material.

For an equivalent, send the code 1240Vit together with the shaft and housing dimensions, a photo of the part, and the original designation or drawing if you have one. That is enough for us to check alternatives in the DBH line or among the other brands we carry, keeping the mounting dimensions unchanged. The code plus a reliable measurement is often all we need to advise you.

To request a quote for this DBH 1240Vit seal, message us on WhatsApp or by email with the code and dimensions. Tell us which application it goes into and which lubricant the assembly uses, and we can also advise on mounting.