The Conklin Sherman Company   How To Use a Conklin Sherman Push Pull Plug   VERY IMPORTANT !!   FIRST MAKE SURE YOUR TUBE IS CLEAN AND DRY   Step 1. Insert applicator in the body cavity of the push pull plug.   Step 2. Push the rubber Push Pull plug into the tube using the applicator.   The Push Pull plug is made of all rubber.   The Push Pull plug is for a one time use only.