Parker Hannifin natural and colored polyethylene tubing meet FDA, NSF-51 and NSF-61 requirements for food contact applications. Parker Hannifin polyethylene tubing is available in black as well as nine other colors, as recommended by the Instrument Society of America. All tubing conforms to ASTM D-1248, Type I, Class A, Category 4, Grade E5. Parker polyethylene tubing is extruded from high molecular weight resin for increased dimensional stability, uniformity and long-term strength. For use with Parker TrueSeal® and Fast & Tite® fittings.