Protect and Restore with 303 Rubber Seal Protectant 303 Rubber Seal Protectant is the easy solution for keeping rubber seals on doors, windows, boots, and bonnets in top condition. Its advanced formula helps prevent drying and cracking, even in extreme temperatures, while restoring flexibility and deepening colour on worn or ageing seals. Featuring a built-in applicator for precise use in hard-to-reach areas, it’s perfect for cars, boats, RVs, and more. Whether you're maintaining new seals or reviving old ones, this protectant keeps rubber supple, sealed, and performing at its best. Protects rubber seals from cracking in heat and cold Restores original colour and elasticity to ageing seals Built-in applicator for easy use in tight spaces Ideal for doors, windows, hoods, boots, and trunks Suitable for cars, boats, RVs, and more