Polyetheretherketone (PEEK) Tubing

This polyetheretherketone (PEEK) tubing is available in many varieties, including natural PEEK, solid color-coded, dual-layer color-coded, striped, and dash-stripe coded. For all the tubing models, standard sizes include outer diameters of 0.0141732 in. (360 µm), 0.03125 in., 0.0625 in., and 0.125 in., with inner diameters as small as 0.002 in. The interior surfaces of the standard sizes are color-coded according to the following scheme: 0.005-in.-i.d. is red; 0.007-in.-i.d., yellow; 0.010-in.-i.d., blue; 0.020-in.-i.d., orange; and 0.030-in.-i.d., green. These have a tolerance of ±0.0005 in. for inner diameters up to 0.010 in. and ±0.001 in. for those larger than 0.010 in. All colorants used are Restriction of Hazardous Substances (RoHS)-compliant. On the dual-layer color-coded model, only the outer layer is pigmented, eliminating potential pigment contamination of the sample stream. This model’s pressure performance is equivalent to that of single-layer tubing.