• Blue Monster Compression Seal Tape stops problem leaks while under pressure - without turning off the water source! Developed for professional plumbing contractors, Blue Monster Compression Seal Tape is ideal for crisis and long-term applications. Blue Monster Compression Seal Tape contains no adhesive. This tape seals by compression, so pulling the tape as tight as possible forms a chemical reaction that fuses the layers of tape into a mass of silicone. Once fused, the silicone mass forms a heavy-duty bond on the leak or connection that serves as an emergency or long-term repair.