Is it possible to seal the seams so liquid doesn't get trapped in between or under the rubber?

You can seal the seams of our Eco-Flec Rolls with our Seam Sealer glue. This glue helps to make your flooring water resistant. Depending on how the seam sealer glue is installed, there is still potential for water and other liquids to slip through the seam. You can also use our Rubber Floor Finish and Sealer in conjunction with our Seam Sealer glue to further make your rubber flooring water resistant.