Patent ID: 9358595
Filing Date: 2016-06-07
CPC Classification: B21B,F16J

Claim Text:
1. A seal assembly for a rotatable shaft, said seal assembly comprising: a seal end plate circumscribing said shaft; a pair of radially projecting circular flingers mounted on said shaft for rotation therewith, said flingers being arranged to straddle said seal end plate and having interior sealing surfaces spaced axially from respective oppositely facing sides of said seal end plate; circular grooves in the oppositely facing sides of said seal end plate; ring seals captured in and projecting axially from said grooves; a network of first passages in said seal end plate, said first passage being configured and arranged to deliver a pressurized fluid to said circular grooves to thereby bias said ring seals axially into contact with the interior sealing surfaces of said flingers, said ring seals having axially oriented second passages for bleeding said pressurized fluid from within said seal end plate to environmental zones outside of said seal assembly, wherein said second passages comprise axial flutes in external surfaces of said ring seals.