Patent ID: 7175388

Claim:
An integrated double seal assembly for sealing a rotatable shaft having a circumferential seal runner and a longitudinal axis of rotation, the integrated seal assembly comprising a static outer housing supporting a first annular sealing member and a second annular sealing member disposed axially adjacent said first sealing member, said first sealing member having an annular carbon seal ring for mounting about an outer surface of said seal runner, the carbon seal ring being operable to be radially displaced such that a radial gap between the outer surface and an inner circumferential surface of the carbon seal ring is controlled to provide a first radial seal therebetween, and said second sealing member having at least one annular labyrinth seal fin projecting towards said outer surface to provide a second radial seal therebetween, said annular labyrinth seal fin being rotationally fixed to said outer housing, and said static outer housing includes an outer annular portion axially extending between first and second radially extending walls thereof which inwardly project towards said outer surface of said seal runner, an axial distance between outer surfaces of said first and second radially extending walls defining a total axial length of said seal assembly, said first sealing member being located proximate said first radially extending wall and second sealing member being located proximate said second radially extending wall.