SEAT, VALVE, QUANTITY: 139

The Naval Supply Systems Command is seeking a quotation for the purchase of 139 valve seats for use in a shipboard system. The seats must be made of a specific material, MC903, and must meet certain requirements for melting point, relative viscosity, specific gravity, and other properties. The contractor must provide a certificate of compliance and material certification test reports for each heat/lot/batch of seat material. The contract will be for a period of 365 days, and the contractor must deliver the seats within this timeframe. * Key features of the required valve seats include: * Material: MC903 (Type 6 cast nylon produced with polyepsilon caprolactam by the direct polymerization process) * Melting point: 221 deg C +/- 9 * Relative viscosity: 2000 Minimum * Specific gravity: 1.15-1.17 at 23 deg C * Dimensional change: 0.2% Maximum * Tensile impact: 80 ft-lbs/in02 Minimum * The contractor must also provide a quality system in accordance with ISO-9001 and maintain a quality system in accordance with MIL-I-45208.