The finish is one of the most vital parts of the container. It must be free of all serious defects to guarantee complete sealing on the filling line. Some defects, such as crizzles on the top sealing surface, may cause a container to leak slowly; which will only be discovered when opened and the contents found to be stale or to have spoiled.

	1. Top Sealing Crown Cork - The sealing surface is on the top of the finish and used for narrow neck containers being filled under pressure.
	Thread or Lug-The sealing surface on the top of the finish is closed by a screw type cap. Use for wide mouth jars and narrow neck bottles.
	2. Side Sealing The sealing surface is on the side of the finish and the cap is pressed on the seal the contents. It is used for wide mouth jars in the food industry.
	3. Cork Sealing The seal is made on the inside of the finish. It is used with narrow neck bottles