Patent ID: 7086411

Claim:
For use in a vehicle wheel rim, a grommet and valve stem assembly, the assembly comprising: a grommet having; a nose section at a first end of the grommet, the nose having a substantially conical shape configured for insertion into an inflation hole in the vehicle wheel rim; a cylindrical section sized to match the inflation hole and having a first end adjoined to the nose section; a flange section projecting radially outward from a second end of the cylindrical section, the flange section having a substantially flat surface opposite to the cylindrical section, wherein at least one interface seal is formed on the flat surface as a hemispherical projection located concentrically about a center axis of the grommet; and an axial bore passing centrally through the grommet body; and a valve stem configured to be inserted through the bore of the grommet, the valve stem comprising a threaded portion configured to receive a retaining nut and a flange having a substantially flat surface that is configured to form at least one sealing interface with the at least one interface seal when the retaining nut is tightened to the valve stem.