Fastpipe O-Ring/Bite Ring Fitting Material Buna N Maximum Operating Pressure 190 psi Maximum Operating Temperature 140 Degrees F Overall Length 20 mm Specific Fitting Shape Fastpipe Spare Parts Kit Compatible Tube Outer Diameter 20 mm Color Black Compatible Tube Hardness 25 Shore Compatible Tube Material Aluminum Compatible Tube Wall Thickness 0.06 in Minimum Operating Temperature 0 Degrees F Resistance Properties Corrosion-Resistant