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: An improved low pressure seal ring configuration, which is adapted for use in combination with a high pressure seal ring to provide a seal assembly which is capable of sealing first and second relatively reciprocating surfaces at both high and low pressures. The low pressure seal ring is designed to be located between the high pressure seal ring and the wall of the groove in which the seal assembly is mounted. The low pressure seal ring exerts pressure against the high pressure seal to provide desired high pressured sealing. The low pressure seal also includes a seal lip which has a tip that extends over the edge of the high pressure seal to provide low pressure sealing. The low pressure seal lip includes a bottom surface which is V-shaped and terminates in an apex. The outer portion of the seal lip includes an annular lobe having a second annular apex.

Abstract: An improved low pressure seal ring configuration which is adapted for use in combination with a high pressure seal ring to provide a seal assembly which is capable of sealing first and second relatively reciprocating surfaces at both high and low pressures. The low pressure seal ring is designed to be located between the high pressure seal ring and the wall of the groove in which the seal assembly is mounted. The low pressure seal ring exerts pressure against the high pressure seal to provide desired high pressure sealing. The low pressure seal also includes a seal lip which has a tip that extends over the edge of the high pressure seal to provide low pressure sealing.

Abstract: A sealing assembly, designed primarily for both very low and high prssure sealing of a rod while either stationary or reciprocating, comprising a first sealing ring having a generally rectangular cross-sectional configuration and including a diagonally depending wiper arm and a second sealing ring having a generally L-shaped cross-sectional configuration. The arm of the rectangular sealing ring seals in the static mode and also serves to wipe fluid off the surface of the reciprocating rod in the dynamic mode. This wiper arm is provided with a sharp wiping edge which in cooperation with the L-shaped sealing ring maintains both a higher loading per unit area and a high rate of pressure rise at the contact with the rod for maximum leakage control at both low pressure and high pressure. The L-shaped sealing ring also restricts and controls the deformation of the wiper arm so as to maintain an optimum contact area between the wiper arm and rod surface thereby minimizing friction and wear therebetween.

Abstract: A sealing assembly, designed primarily for both very low and high pressure sealing of a rod while either stationary or reciprocating, comprising a first sealing ring having a generally Y-shaped cross-sectional configuration and a second sealing ring having a generally L-shaped cross-sectional configuration. One arm of the Y-shaped sealing ring seals in the static mode. The other arm seals in the static mode and also serves as a wiper arm wiping fluid off the surface of the reciprocating rod in the dynamic mode. This wiper arm is provided with a sharp wiping edge which in cooperation with the L-shaped sealing ring maintains both a higher loading per unit area and a high rate of pressure rise at the contact with the rod for maximum leakage control at both low pressure and high pressure. The L-shaped sealing ring also restricts and controls the deformation of the wiper arm so as to maintain an optimum contact area between the wiper and rod surface thereby minimizing friction and wear therebetween.