A-A-50690, COMMERCIAL ITEM DESCRIPTION (CID): TIRE FILL, SOLID POLYURETHANE (26-NOV-1990)

A-A-50690, COMMERCIAL ITEM DESCRIPTION (CID): TIRE FILL, SOLID POLYURETHANE (26-NOV-1990)., This specification covers the requirements for standard polyurethane flat proofing materials for filling pneumatic tires. When correctly filled and cured, the tire shall be rendered deflation proof against punctures, tears and other penetrations.