A problem exists for providing a sealing arrangement for a folding, gel supply brush (10). The solution comprises a brush element (12) and an elongated handle (14) pivotally secured to the brush element (12) for movement from a position adjacent the brush element (12) to a position substantially at right angles to the brush element (12). An opening (30) is provided extending through the brush element (12) to the bristles (16) which aligns with an opening (38) in the elongated handle (14) entering into a gel retainer in the handle (14), when the handle (14) is positioned at right angles to the brush element (16). A flange (25) disposed on the brush element (12) is effective to seal off the opening (38) in the elongated handle (14) with the elongated handle (14) positionel adjacent the brush element (12).