Elaplus Submarine Cable Sealing Solution – Recommended PUR 1661
With the continuous expansion of deep-sea operations, the sealing and protection of submarine cables have gradually become a focus of attention in the industry. Submarine cables are subjected to extreme environmental conditions, including high water pressure, corrosive saltwater, extremely low temperatures, and prolonged usage loads. Therefore, the sealing material of submarine cables not only needs to have excellent waterproof and moisture-proof performance, but also needs to maintain sufficient hardness and stability in extremely deep waters (such as 100 meters deep). Customer needs and challengesThe customer’s requirement is to use PU (polyurethane) material to ensure that the sealant has sufficient hardness and waterproofness to cope with high-pressure environments at a depth of 100 meters underwater. This demand places high standards on sealing materials:▶ Stability under high pressure environment: A depth of 100 meters underwater means that the cable will withstand high water pressure, so the sealing material must have excellent compressive strength and be able to withstand deformation or loss of function for a long time of use.▶ Waterproof and moisture-proof: The underwater environment has sufficient moisture, and the material must be effectively waterproof and moisture-proof, with extremely low water absorption to avoid material degradation after prolonged immersion.▶ Good adhesion: The sealing material needs to have good adhesion to the metal or plastic substrate outside the cable to ensure long-lasting and stable sealing effect.▶ Environmental protection and operability: Due to the high environmental requirements of underwater operations, it is particularly important to choose non-toxic and heavy metal free environmentally friendly materials. Moreover, the operability on site also needs to consider the process requirements and application convenience.To address the above challenges, Yilian recommends using the PUR 1661 series products (PUR 1661A/B), which is a two-component solvent-free polyurethane elastomer resin designed specifically for sealing, filling, and other fields.PUR 1661： Ideal sealing material for…
