Construction: Tube:Black, oil resistant Nittrile rubber. Reinforcement:Two braids of textile reinforcement, pretreated for tube and cover adhesion. Helix wire between the braids resists collapse under vacuum or bending. Cover:Oil and abrasion resistant synthetic rubber. Temperature range:-40° To +21 Fahrenheit. Application: No skiving required. Recommended for petroleum and water-bases hydraulic fluids in low pressure and vacuum service.