Material selection plays a crucial role in the function and durability of waterproof cable assemblies. Thermoplastic polyurethane (TPU) is a popular choice for connectors due to its flexibility and resistance to abrasions, chemicals, and environmental wear. Brass, often used in connector contacts, is highly durable and corrosion-resistant. Paired with gold plating, it ensures enhanced conductivity and minimal contact resistance. For example, the D-SUB to D-SUB waterproof cable assembly features TPU inserts and over-molding along with brass contacts, delivering both durability and dependable electrical performance.