Mojave, Calif.-based XCOR Aerospace said March 16 it has entered into a 15-year sales and sponsorship agreement with Airgas Inc., the largest U.S. distributor of gases, welding and safety products.

Under the terms of the deal, Airgas will provide liquid oxygen, helium and nitrogen for XCOR’s reusable, nontoxic propulsion systems, including the Lynx reusable suborbital spacecraft. XCOR, in turn, will participate in joint marketing programs with Airgas to promote XCOR propulsion systems and suborbital space launch services, according to the announcement.