This heavy-duty butyl sealant tape provides superior waterproof protection for RV/camper roof repairs with 2mm thick butyl rubber core (0.5mm aluminum reinforcement) that creates permanent, airtight seals. The UV-resistant tape withstands extreme temperatures (-40°C to 120°C) and 99% waterproof efficiency, bonding instantly to metal/plastic/fiberglass surfaces with 18N/cm² adhesion strength. Its 10cm width covers cracks up to 15cm, offering 8+ years weatherproof performance without cracking or s
