Polyamide Suture (Nylon Sutures) is a Non-Absorbable sterile surgical suture composed of long-chain aliphatic polymers Nylon 6 and Nylon 6,6. Polyamide Nylon Suture is dyed black or blue to enhance visibility in tissue. The Monofilament Polyamide-Nylon Suture is indicated for use in general soft tissue approximation and/or ligation, including use in cardiovascular, ophthalmic, and neurological procedures.