TAPP CAPP USB Cable Weatherproofing Kit - black Seal cap that provides weatherproof protection to any USB cable when plugged into a 3BR TAPP USB power port. Field installed part for installation on any USB cable with a Type A plug on one end Molded from rugged Brulloy rubber: Brulloy is inherently resistant to ozone, UV, grease, and oil. It can withstand service temperatures from - 130 to 225F (-90 to 107C)!