DBH 8939 radial shaft seal — 65 x 80 x 8

DBH 8939 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 8939 and any equivalents.

The DBH 8939 is a radial shaft seal that keeps lubricant in and contaminants out where a rotating shaft passes through a fixed housing. It measures 65 mm at the shaft, 80 mm at the housing and 8 mm in height, and it uses the Lx design. You will find it in gearboxes, pumps, electric motors and other power transmission equipment, where the seal plays a direct role in how long the bearings last.

This seal belongs to the DBH line and is identified by part number 8939. The dimensions to check before ordering are shaft 65 mm, housing 80 mm and height 8 mm. The Lx designation describes a single lip with a spring, made for rotating shafts lubricated with grease or oil. The elastomeric lip rides against the shaft, the spring holds it in contact, and the metal case keeps the seal seated in the housing.

You will see this type of seal in gearboxes, centrifugal pumps, electric motors, conveyor rollers and machine tools. It also appears on belt and chain drive shafts, where oil or grease has to stay inside and dirt has to stay outside. In these positions the seal shields the bearings and helps stretch maintenance intervals, as long as the shaft and housing are in good shape and the surface speed suits the lip material.

During installation, confirm the 65 mm shaft and 80 mm housing and check both for burrs or marks that could cut the lip. Coat the lip with the same lubricant used in the equipment, then press on the outer ring only, never on the elastomer. The 8 mm height should sit flush or slightly recessed according to the housing design. If the shaft is worn, a repair sleeve is worth considering before the new seal goes in.

If you need an equivalent or another size, send part number 8939 along with the shaft, housing and height dimensions and the lubricant type. With that information we can look for alternatives in the DBH line or among the other brands we supply, keeping the Lx design and the operating temperature range in mind. We can also tell you whether the space allows a double lip or a dust lip variant, depending on how contaminated the equipment is.

MR Industrial Accessories supplies the DBH brand within its range of seals and oil seals. To request a quote for this seal, send part number 8939 by WhatsApp or email and our team will reply promptly with the option that fits your equipment. We also answer questions about other seal series, as well as housings, bearings and power transmission components.