As stated from the name, TPU is a type of thermoplastic elastomer that combines the properties of rubber with the processability of thermoplastics. Chemically, it's composed of linear segmented block copolymers with hard and soft segments. The hard segments are typically made from isocyanates and chain extenders like 1.4-butanediol, while the soft segments are often polyols, such as polyester or polyether. This combination gives TPU its distinctive flexibility, elasticity, and abrasion resistance, making it ideal for producing parts that require durability and flexibility, such as gaskets, seals, and wearable items. TPU is resistant to abrasion, oils, and greases, giving it excellent durability for high-wear applications. TPU is often used for products that need to be both durable and flexible, whereas other filaments are typically used for more rigid and structural parts.