... proof.Structure feature1, Whole insulation case, it has the self-sealing stucture, whose character is damp-proof, water-proof, corrosion- ... installation, matching insualted and gloves,live operation, don't need strip;3, Saving labor, material, and building spacer;4, Safe ... and the clamp has long service life. Waterproof seal adopts high quality rubber band and silicagel. Inslot blade is coated by ...