Radial shaft seal DBH 9774 — 12.00 x 21.00 x 4.00

DBH 9774 is a radial shaft seal reference, within Seals. Request a quote for 9774 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 9774 radial shaft seal is a lip seal mounted on the shaft and inside the housing to retain lubricant and block dust, water or particles from entering. With a 12 mm shaft diameter, 21 mm housing diameter and 4 mm height, it is a compact size found in equipment where axial space is limited. MR Accesorios Industriales carries this brand and helps you confirm it is the correct size before quoting.

This item is a DBH 9774 radial shaft seal, with the following dimensions taken from its product page: shaft diameter 12 mm, housing diameter 21 mm and height 4.00 mm. The indicated design is Lx, a single-lip profile with a metal case that is press-fitted into the bore. The 9774 designation corresponds to the manufacturer's part number and should not be confused with other sizes in the same category. If your shaft or housing differs by even a few hundredths, it is best to verify before mounting.

Seals of this size are used in small electric motors, gearboxes, pumps, compressors, machine tools and power transmission equipment where a small-diameter rotating shaft must be sealed. They also appear in automotive applications and in laboratory or dosing equipment. The function is always the same: keep oil or grease inside the assembly and prevent contaminants from entering that would accelerate wear on bearings and bushings.

To select a seal correctly, in addition to the three dimensions, take into account shaft speed, operating temperature and the type of lubricant. A lip made of the wrong material hardens or crystallizes prematurely. During mounting, lubricate the lip before sliding it on, avoid striking it with pointed tools and check it with a caliper. If the housing has burrs or the shaft is scratched, the new seal will fail quickly.

If part number 9774 is not the one you need, we can look for a nearby size or an equivalent within the same radial shaft seal category. To do that, send us the shaft diameter, housing diameter and height you measured, plus a photo of the old seal if you have one on hand. With that data we review alternatives and tell you which option best fits your equipment.

MR Accesorios Industriales carries the DBH brand and has more than 80 years of experience in the industry. If you already know this is the seal you need, send part number 9774 on WhatsApp and we will send you the quote. If you have doubts, write to us anyway: we will help you confirm the size before you place your order.