Patent ID: 7240904
Filing Date: 2007-07-10
Classification: F16J

Abstract:
1. A secondary seal element including a base body made of a synthetic material, said base body comprising a base portion and a seal portion, said base and seal portions including coaxially aligned, axially adjacent through bores for the passage of a component, and an annular disc element accommodated in said base portion and including a through bore coaxially aligned with the through bores in the base and seal portions, said annular disc element being formed of a material which differs from that of the base body, wherein in the unloaded state, the through bore of said annular disc element has a radial dimension d which is greater than that D 2 of the through bore of said seal portion and smaller than that D 1 of said base portion of the base body, wherein the annular disc element is formed of a carbon material, and wherein the annular disc element is disposed in a recess in an end face of the base portion and projects axially beyond the end face and further in such manner so that a pressurized fluid can exert a radially inward force on at least a portion of a radially outermost surface of the annular disc element when the secondary seal element is in a loaded state.