How Buffer Rod Seals Influence Rod Seal Performance

摘要

In Part 1 of this article, tests reveal how these two seals interact to affect friction and seal life. But first, a look at buffer seals. Designers often specify buffer seals be placed in front of primary rod seals in heavy-duty hydraulic applications to extend the life of the seals. As the name indicates, buffer seals "absorb" pressure spikes typical on heavy-duty cylinders to protect the primary rod seals. But how do these two types of seals interactions interact, which parameters affect those interactions, and how can they be used to extend the life of cylinder rod-sealing systems?