Translucent, non-contaminating, with very low permeability Offered in choice of Teflon® FEP or Teflon® PFA Teflon® FEP tubing is usable to 205°C. Teflon® PFA tubing is usable to 250°C. Listings indicate bore x o.d x wall thickness in inches. Case contains 50’ (15.2 m) of tubing.