Tubing, Application Air, Color Black, Hardness Shore D 45, Inside Diameter 1/4 in, Jacket Material No Jacket, Material Polyethylene, Material Trade Name Synflex, Maximum Operating Pressure 522.14 psi, Maximum Operating Temperature 176 Degrees F, Outside Diameter 3/8 in, Overall Length 250 ft, Peristaltic Pump Compatible No, PEX Type Not Applicable, Resistance Properties Flame Retardant, Reinforcement Not Reinforced, Standards 1238, 1505, 2863, 570, 638, 746, ASTM D635, UL 94