DBH 5266 radial shaft seal — 17 x 40 x 8.5

DBH 5266 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 5266 and any equivalents.

The DBH 5266 is a radial shaft seal with an Lz design, meaning it has a primary sealing lip plus a secondary dust lip. It fits a 17 mm shaft and a 40 mm housing bore, and its 8.50 mm height sets the housing depth needed. This seal keeps oil or grease in place and blocks dust and dirt from reaching bearings and gears in gearboxes, pumps, motors and similar power transmission equipment.

The part number to reference is 5266, and the seal carries the DBH brand. Its nominal dimensions are shaft 17.00 mm, housing 40.00 mm and height 8.50 mm. The Lz configuration pairs a main lip with an exclusion lip for dirty or dusty surroundings. We confirm the lip elastomer and body material against the manufacturer's data sheet when you request a quote.

Seals of this size are common in gearboxes, speed reducers, centrifugal pumps, electric motors and power transmission assemblies. Their job is to hold lubricant inside the housing and keep outside particles from getting in, which would otherwise speed up wear on bearings and gears. They also appear on fan, mixer and conveyor shafts, where the lip runs directly against the rotating shaft.

When installing, inspect the shaft for burrs or marks that could cut the lip, and make sure the housing bore is clean and round. Press the seal in with a press or a support tube that contacts only the outer diameter, never the lip. The 8.50 mm height tells you how much room the housing must provide. For high-speed or high-temperature service, check the lip material and the lubricant before fitting the seal.

If you need an equivalent, send part number 5266 or the shaft, housing and height dimensions. We can also search other brands or a different lip style based on the contamination level and operating conditions. The more details you share — speed, temperature and the fluid being retained — the more precise the match. MR Industrial Accessories supplies this brand and can help you select the right seal.

To get a quote for the DBH 5266 oil seal, send the part number to MR Industrial Accessories by WhatsApp or email. We will reply with the relevant information and suitable alternatives for your application. You can also ask about other seals and oil seals in the same category.