Seat, valve

The Department of the Navy Naval Supply Systems Command seeks 304 units of valve seats (NSN 1HM 4820-01-068-4692), with quotations due May 26, 2026. The procurement is a total small business set-aside.

Place of performance is the contractor's facility, with inspection and acceptance at origin and delivery to Portsmouth Naval Shipyard, Kittery, Maine within 365 days of contract award. The valve seats must be manufactured from MD71-GG Mearthane (Graphite Filled Urethane) by Mearthane Products Inc. of Cranston, Rhode Island per Newport News Shipbuilding drawing 255584, with mechanical properties including 705 Shore D hardness, 1.180±0.02 specific gravity, and 5000 PSI minimum tensile strength. The material is designated Special Emphasis Level I, requiring extensive quality assurance controls, material traceability, and quantitative chemical and mechanical analysis certification. Contractor shall maintain configuration control, submit engineering change proposals for any modifications, and provide objective quality evidence through material certification test reports with visual inspection per defined criteria.

The NAICS code is 332919, Other Metal Valve and Pipe Fitting Manufacturing; PSC is 4820, Valves, Nonpowered. The contract carries DO (national defense) rating under the Defense Priorities and Allocations System. Mandatory requirements include ISO 9001 quality system compliance, hazardous material identification, packaging per MIL-STD-2073, cybersecurity safeguards per NIST SP 800-171, and electronic submission of payment requests and receiving reports via WAWF. Evaluation prioritizes past performance as the primary factor, with price as secondary.