The NASA/NSSC has a requirement for NTF Nearside Door Seal and intends to issue a sole source contract to Performance Sealing Inc. The contract will be for commercial items and services using the provisions, clauses, and procedures prescribed in FAR Part 12 and FAR Part 13. The work will be performed at NASA/Langley Research Center (LARC). Interested organizations may submit their capabilities and qualifications to perform the effort in writing to the identified point of contact. • The NAICS Code for this procurement is 339991. • The Government intends to acquire commercial items and services. • The contract will be issued under the authority of FAR 13.106-1(b)(1)(i). • Oral communications are not acceptable in response to this notice.