DBH 8438 radial shaft seal — 22 x 40 x 13

DBH 8438 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 8438 and any equivalents.

The DBH 8438 is a radial shaft seal from the DBH line, built to keep lubricant in and contaminants out where a shaft turns inside a housing. Its three key measurements are a 22 mm shaft, a 40 mm bore and a 13 mm height, and it uses the A 320 lip-and-metal-case configuration. MR Industrial Accessories supplies this brand and can help you confirm the right seal for your equipment.

Reading the code and size is the first step. The 8438 identifies the item within the DBH line, while the three figures describe the fit: shaft 22 mm, housing bore 40 mm, overall height 13 mm. The A 320 designation tells you the seal has a sealing lip and a metal outer case, a common arrangement for rotating shafts that run with oil or grease. Before you order, compare all three measurements against the shaft, the bore and the housing depth on your unit, because a mismatch will prevent the seal from seating correctly and can damage it during installation.

These seals appear wherever a rotating shaft passes through a housing and leakage or ingress must be controlled. You will find them in gearboxes, centrifugal pumps, electric motors, speed reducers, compressors, line shafts and machine tools. They also suit dusty or wet environments when installed properly and when the shaft surface is hard enough and smooth enough for the lip to run against.

Selection and installation follow a few practical checks. Confirm that shaft, bore and height match the seal. Inspect the shaft for burrs, scratches or wear in the lip contact zone. Keep the lip lubricated, and apply a thin film of clean oil or grease before pressing it in. Verify that operating speed and temperature stay within the limits of the lip material. A seal driven in at an angle or struck during fitting will fail even if the part itself is sound.

If you need a cross-reference for the DBH 8438, send the full code, the dimensions you measured (shaft, bore and height) and a photo or description of the equipment. That lets us search for a match within the same brand or another line we carry, keeping the dimensions and design type consistent.

To request a quote, message us on WhatsApp or email with the code 8438 and your equipment dimensions. Our team handles technical questions and helps you find the seal you need, and can also advise on other oil seals, sealing components and power transmission parts we supply.