PEEK tubing has a very smooth internal surface, which causes less turbulence than the similarly sized metal tubing. Of all our polymer tubing materials, PEEK is the least permeable to gas.
Our high pressure tubing includes bioinert PEEK, formally known as poly ether ether ketone. PEEK is a high-performance engineered polymer with mechanical and chemical resistance properties that absorb high temperatures, making it highly resistant to thermal degradation. PEEK tubing has one of the highest strength-to-weight ratios of any thermoplastic and the strength required to withstand continuous use at HPLC pressure. Its distinct materials make it inert to most solvents and give it a smooth internal surface that improves the resolution of sample bands. With its introduction into the marketplace, PEEK materials have become a popular replacement for stainless steel tubing for fluidic needs.