Clean off the outside of the vent connection and the inside of the exhaust pipe with a smooth cloth and water to get rid of any construction debris or dust on the pipe. This will help ensure a good seal.
Slip the exhaust pipe into the inlet on the vent. If needed, have an assistant hold the pipe in place while you continue to work.
Prepare a piece of foil tape by pulling it off the tape reel. Don't tear it off yet.
Apply the foil tape so that the seam runs directly down the center of the tape. Press firmly on the tape to stick it in place.
Continue wrapping the foil around the seam between the exhaust pipe and the vent until you have made at least one complete turn around the pipe.
Trim off any excess foil with scissors.
Run the dryer. Check the seam where the exhaust pipe connects to the vent and patch with additional foil, if needed.