The Naval Surface Warfare Center Philadelphia is seeking 640 Bell and Gossett Plate Heat Exchanger Plate Packs (P/N: GPX-AP188 5-427-23-639-001) on a brand-name basis with a total small business set-aside. The contract type will be firm-fixed price, and no substitutions are allowed. Quotations must include an authorized distribution letter. Responses must be sent to Brooke Steele via email; phone calls are not accepted. No budget amount or performance location is specified in the description.