The Seaview Cable Seals (also known as CableClams, Cable Glands or Deck Seals) provide waterproof cable routing. These are made of very strong plastic or marine grade 316 stainless steel and come in a variety of colors and finishes. Seaview cable seals fit a wide range of cables and connectors. Seaview Cable Seal options for 0.67-inch to 1.38-inch (17mm to 34mm) connectors, making it ideal for almost every installation. All Seaview Cable Seals (including the round Cable Seals) will work with more than one cable as long as each cable has its own hole and there is at least .125" of rubber around each hole.This vertical cable seal (EDMO# CGM17PB) fits multiple cables up to 0.50-inch (10.6mm), connectors up to 0.67-inch (17mm), and has a black plastic housing.