This is a procurement for a specialized MC 903 Nylon Tube for a ball valve seat/seal, designated as SPECIAL EMPHASIS (Level I) material for a crucial shipboard system where failure could result in serious injury, loss of life, or loss of the ship. The final delivery of material is required within 365 days, with certification data due 20 days prior to delivery. The contractor must provide a one-year warranty from the date of delivery and maintain a rigorous quality system compliant with standards like ISO-9001, with Government Quality Assurance performed at the source. The material must meet precise dimensional and property specifications as outlined in Electric Boat Specification 2000.