Abstract: A seal assembly having an exclusion portion and a seal portion so that the assembly functions as both a sealing and exclusion device. The seal portion includes surfaces which are shaped to provide chambers that create vortexes which reduce leakage of fluid or gas from the system. The exclusion portion, in combination with the seal portion, is shaped to prevent entry of contaminants into the system being sealed and to reduce extrusion of the excluder portion of the seal. Three different embodiments of the invention are disclosed using different elastomer energizer configurations.

Abstract: A sealing system for use in sealing a rod bore and reciprocating rod including a first and second sealing assembly. The first sealing assembly, disposed within a gland in the rod bore wall, comprises a seal ring, non-sealing backup rings, and an energizer that seals only in one direction. The energizer has axial and radial grooves permitting one way sealing. The backup rings have channels preventing sealing in either direction. One embodiment of sealing system includes the first seal assembly containing no downstream backup ring.