V-rings are rubber face seals. The V-ring is mounted on the shaft and seals the counter surface. A V-ring is produced slightly smaller than the shaft itself, cou sing it to clamp onto the shaft. The lip of the seal prevents liquids and dust from the outside.

When the rotational speeds increases, centrifugal forces act on the sealing lip which reduces contact pressure. This effect allows the V-rings to be used at higher rotational speeds at very low friction losses.