This is a Sources Sought notice for an oxygen mask (NSN 1660-017070384) manufactured by Gentex (CAGE 60240). The government intends to award a Long Term Contract for up to 10 years, with an estimated maximum quantity of 21 units per year. The contract would be limited to the Original Equipment Manufacturer. No budget amount or performance location is specified. This notice is for market research only and does not constitute a solicitation or commitment to award a contract.