Patent ID: 7445047

Claim:
A seal assembly for use in a wellbore tool having a housing and a member that is to be sealed with respect to the housing, the seal assembly comprising: an annular chevron seal member having a chevron-shaped cross-section with a pair of dynamic wing portions with sealing surfaces for forming a sealing engagement with the housing and the member; a non-elastomeric C-seal ring having a generally C-shaped cross-section; and an end adapter backup ring in contact with an outer radial surface of the C-seal ring for cushioning the C-seal ring into contact with external components; an annular C-seal support ring disposed between the chevron seal and the C-seal ring, the C-seal support ring comprising: an enlarged diameter portion having a generally V-shaped surface for abutting the chevron seal; and a reduced diameter portion for abutting an interior surface of the C-seal, the reduced diameter portion having a recess for receiving axial ends of the C-seal ring cross-section when the C-seal ring is axially compressed.