DBH 8840 radial shaft seal — 50 x 110 x 10

DBH 8840 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 8840 and any equivalents.

Part 8840 from DBH is a radial shaft seal, also called a lip seal or oil seal. It sits between a rotating shaft and its housing, holding lubricant in and keeping dust, water and other contaminants out. The designation tells you the three key measurements: shaft 50.00 mm, housing 110.00 mm, height 10.00 mm. The Lx design refers to the lip and body geometry, which determines how the seal contacts the shaft and how it fits into the bore.

This seal suits rotating shafts that run with permanent lubrication. You will find it in gearboxes, centrifugal pumps, electric motors, conveyor rollers and other power transmission equipment. Its job is twofold: stop oil or grease from escaping, and shield bearings and bushings from whatever is floating around outside. Because so much depends on it, replace it as soon as you see leaking or wear on the lip.

Before fitting a replacement, check the shaft for burrs, nicks or deep grooves in the contact zone, and make sure the housing bore is clean and not deformed. The 10.00 mm height has to match the cavity depth so the seal seats completely. Lubricate the lip with the same oil or grease used in the equipment, then press with a mounting tube on the outer ring only, never on the lip. If the shaft is worn, a repair sleeve or a different size may be the better route.

Reading the code is straightforward: 8840 identifies the item, and the Lx designation covers the lip configuration. If you are unsure whether Lx is right for your setup, or if another lip style or material would work better, that is the kind of question our team handles. Send the full code, a photo of the old part and caliper measurements, and we can look for equivalents in other brands or configurations.

To get a quote, message us on WhatsApp or by email with part number 8840 and the quantity you need. We serve customers throughout the United States and in several Latin American countries, and we can also help you confirm the right seal or a comparable option before you order.