Dynarex Nylon Sutures are manufactured with nylon monofilaments for a smooth passage. The nylon sutures are non-absorbable offering high tensile strength, making them suitable for longer-term closures. Dynarex Nylon Sutures are black for high visibility and packaged in sterile pouches. Used to hold body tissues together after an injury or surgery. Application generally involves using a needle with an attached length of thread.