PEEK capillary tubing is designed specifically for the demands of high pressure chromatography (HPLC). More corrosion resistant than stainless steel, PEEK is strong enough to take the pressure of 5,000 psi. PEEK has nearly the heat reisstance and chemical resistance of PTFE, but it is also structurally strong and abrasion resistant. It does not leach, and it is unaffected by continuous exposure to steam. Typical Applications: Liquid chromatography, Pump and valve components , Seal rings, Semiconductor Processing, Medical devices.