PEEK tubing can be used instead of stainless steel tubing in most applications. PEEK is inert to almost all organic solvents and is biocompatible. Unlike metals, plastics are viscoelastic and, therefore, the yield strengths are not well defined. Many factors affect the burst pressure of PEEK tubing. PEEK tubing will burst at a lower pressure when you:

• Increase the inside diameter.
• Increase the temperature.
• Increase the time of exposure.
• Increase the concentration of organic solvents.
• Expose tubing to specific solvents. DMSO, THF, and methylene chloride cause the PEEK tubing to swell. Concentrated nitric acid and sulfuric acid weakens the tubing.