The container is under filled to allow for the addition of the pre-measured catalyst that is included. A drill, and a mixer (shown at left) will be needed to incorporate the catalyst. For a 1 gallon can a short mixer will suffice. For 4 or 5 gallon pails you MUST use a long shaft mixer.
The catalyst will be inside the box for 1 gallon and 1 gallon repair kits. The catalyst will be located under the lid in 4 and 5 gallon pails.
Mix rubber material in can/pail until uniform; center mixer shaft in pail or can and begin mixing until a vortex is formed. Slowly pour all of catalyst into vortex . Move mixer up and down and in a circular motion for 2-3 minutes until all portions of can/pail are uniformly mixed