Abstract: A connector for connecting rods, particularly fiberglass sucker rods for use in an oil well, end to end. The connector comprises a rod receptacle having an interior surface shaped to form at least one, but preferably a plurality, of annuluses between the rod and the interior surface of the rod receptacle. The annulus(es) are filled with an initially flowable adhesive which hardens in the annular space(s) to form a wedge or series of axially aligned wedges. The wedge or wedges comprise an annularly thin portion and an annularly thick portion distal to the thin portion. The thick portion of the wedge approaches the rod within the receptacle distal to the thin portion. In the present connector, the thick portion of the wedge or wedges approaches the rod asymptotically.