Black flexible seal repair tape that provides instant and watertight sealing to leaks on all surface types. Waterproof silicone-butyl adhesive enables this black shield patch tape to be applied on water-submerged surfaces. The tough rubber backing on this waterproof tape can be used on wet surfaces, EMPOWERING the AVERAGE AMERICAN with little to no experience in repair to fix pipes, boats, RV and roofing quickly with PROFESSIONAL-GRADE results! Flexible rubber surface resists tears, heat and frost- making it a great OUTDOOR Stop Leak Tape even on extreme temperatures (-30F to 374F). This swift response patch seal tape can be applied to all weather types and on smooth or rough surfaces for long-term repairs. Note: The data are manual measurement, please allow a 1-3cm error, due to the differences between the light and the display, there will be a certain color difference, the specific received in kind prevail.