The Seaview CG20SS Standard Cable Seal (also known as Cable Clams, Cable Glands, or Deck Seals) provides waterproof cable routing. Made of marine-grade 316 stainless steel, this Seaview cable seal fits up to 13.5mm (.53") dia. cable and up to 20mm (.81") connector. NOTE: All Seaview Cable Seals will work with more than one cable provided each cable has its own hole and there is at least .125" of rubber around each hole. No Need to Remove Connectors â The split seal design eliminates the need to remove cable connectors during installation. Watertight Installation â Tapered rubber seal forms watertight installation. Base gasket is also provided for clean, watertight installation. Waterproof rating of IPX6 and IPX7.Improved Shape and Design â Low-profile design for a strong, impact-resistant and clean installation. No sharp edges. Drill Tubes Included â Each cable seal comes with 4 brass drill tubes (6, 8, 10, and 12mm). These are used to drill very clean and easy holes vs. a typical drill bit. SpecsNumber of Cables: 1Cable/Connector Size: up to 13.5mm (.53") dia. cable / up to 20mm (.81") connectorMaterial: Polished Stainless Steel Tapered rubber seal with base gasket provides clean, watertight installation Low-profile design for a strong, impact-resistant and clean installation Comes with 4 brass drill tubes (6, 8, 10, 12mm) to drill very clean holes | CG20SS Standard Vertical Entry Cable Seal, Polished Stainless Steel