Notice of Intent to Sole Source Requirement Description: Research, development, laboratory-scale formulation, prototype production, and material characterization for advanced solid rocket motor internal insulation materials capable of meeting extreme low-temperature operational requirements. Deliverables include test data, prototype-scale material lots, material samples, reports, and supporting documentation. Sole-Source Rationale: R.E. Darling Co., Inc. (REDAR) is the only responsible source with the proprietary formulations, specialized personnel, and large-scale rubber-processing infrastructure needed to meet NAWCWD performance and schedule requirements. A Sources Sought Notice was posted to SAM.gov on 19 September 2024 under PR N68936-24-R-0043, and REDAR was the only respondent. Response Instructions: This notice is not a request for competitive proposals. However, interested parties may submit a capability statement demonstrating clear and convincing evidence that competition is possible. Responses must include: Demonstrated technical capability to meet low-temperature insulation performance requirements Evidence of access to required proprietary data or equivalent qualified technology Ability to deliver production-scale material within the required timeframe Responses are due no later than: Date 15 days After Posting Submit to: Contract Specialist: Erin Villar Email: erin.m.villar.civ@us.navy.mil Contracting Officer: Brian Gillead: Email: larry.b.gillead.civ@us.navy.mil Subject line: Response to Notice of Intent to Sole Source – N6893624R0043 Disclaimer: Information received will be used solely to determine whether to conduct a competitive procurement. The Government is not responsible for costs associated with responding to this notice.