Buffer Rings, i.e. sealing device used as a “buffer” to reduce the impact of the pressure spikes on the primary seal. They act as a rod seal, enabling trapped fluid sealed by the secondary seal, which is down stream of the buffer, to be pumped back into the system. When buffer ring are used in combination with a lip seal, the resulting sealing system provides long life with an exceptionally dry rod. Buffer seals are commonly used for rod seal application only.
