Do you need to seal the seams of these tiles?

We don't recommend using any glue with any of our rubber tiles. All of our rubber tiles have very tight interlocks, which will make the floor appear virtually seamless. Our Seam Sealer Glue should only be used in installations where a person is looking for a waterproof installation. They would use both our Rubber Floor Finish and Sealer and our Seam Sealer Glue to accomplish this.