Seal for chromatography column having ridges
AssigneeMillipore Investment Holdings Limited
InventorsColin K. Lanyi, Geoff Purdom
Life of this patent
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Abstract
An annular seal for chromatography columns adapted for radial sealing with an inner cylindrical surface, having a compressive surface disposed on the inner annular edge of the seal, and a sealing surface disposed on the outer annular edge of the seal, whereas the sealing face is substantially planar and has two parallel edges, which sealing face further comprises at least one release ridge disposed on the sealing surface adjacent to each parallel edge, which release ridge aids in ensuring breaking of the seal between the sealing face and the inner cylindrical surface.
Claims4
An annular seal for chromatography columns adapted for radial sealing with a cylindrical surface, said seal having a sealing face, a first annular edge comprising a compressive surface and a second annular edge spaced from said first annular edge and comprising a sealing surface, said sealing surface being substantially planar and having two parallel edges, said sealing surface further comprising at least one release ridge disposed on said sealing surface adjacent to each parallel edge, which release ridge aids in ensuring breaking of the seal between said sealing surface and said cylindrical surface.
A chromatography column comprising a column tube having an inner surface;
- a moveable piston within said column tube;
- and means for sealing said piston against said inner surface comprising a seal having a sealing face, a first annular edge comprising a compressive surface and a second annular edge spaced from said first annular edge and comprising a sealing surface, said sealing surface being substantially planar and having two parallel edges, said sealing surface further comprising at least one release ridge disposed on said sealing surface adjacent to each parallel edge, which release ridge aids in ensuring breaking of the seal between said sealing surface and said inner surface.
Dependencies are inferred from the claim text.