SKF 401904 v-ring seal

SKF 401904 belongs to v-ring 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 401904 and any equivalents.

A V-ring seal is a rotary sealing element that fits on the shaft. Its ring-shaped body carries a V-profile lip that turns with the shaft, holding lubricant in and keeping dust, water and particles out. You will find these seals in bearing housings, electric motors, pumps, gearboxes and other rotating equipment where a straightforward barrier is enough. MR Industrial Accessories supplies the SKF line to customers throughout the United States and in several Latin American countries.

SKF identifies these V-ring seals with a six-digit numeric code, for example 400050, 400060 or 400124. Each code corresponds to one size and profile in the family. The base code carries no series letters and no material suffix, so matching it against both the shaft size and the working outside diameter is what confirms the right seal. If you still have the old code or the equipment drawing, send it over and the team will check it for you.

On the machine, the seal sits on the shaft and its lip bears against the front face of the housing or against a retaining washer. Because it rotates with the shaft, centrifugal action throws off dust and splashes. This makes V-rings a common sight in electric motors, centrifugal pumps, gearboxes, conveyor belts and process equipment, particularly in food plants, paper mills, cement plants and agro-industrial operations where the surroundings are dirty and damp.

Selection comes down to three inputs: shaft diameter, rotation speed and the contaminant you are dealing with. The lip needs a slight interference fit against the opposing face. Too little contact and the seal will not close; too much and it wears out quickly. Keeping the lip lubricated helps carry heat away and extends service life. Shaft-to-housing alignment also counts, since significant misalignment makes the lip work unevenly. Where water is present in quantity, pairing the V-ring with a main radial shaft seal is a sensible approach.

SKF V-ring seals can be swapped for equivalent products from other European and Asian manufacturers when the shaft dimensions and lip profile line up. No universal interchange table exists, so interchangeability is verified by measuring the shaft and checking the working range. If you send the original code, or simply the shaft and housing dimensions, MR Industrial Accessories can help you locate the right replacement.

For SKF V-ring seals on your equipment, send the code or shaft size by WhatsApp or email. The team replies promptly with the corresponding reference and prepares your quote, and can also suggest equivalents or help you choose. Radial shaft seals, mechanical seals and other sealing components are available as well to round out a machine maintenance job.