Offering excellent chemical and mechanical properties, these biocompatible fittings are one piece (no ferrule required) and fit any 20-32 thread fitting detail on the market. VICI-Jour PEEK-HT TM fingertight fittings are rated to 500 bar (7,250 psi) when finger tightened. Pressures up to 1,000 bars (14,500 psi) can be accomplished by turning the finger-tightened fitting an additional 1/2 - 3/4 turn (180° - 270°) with a 5/16" wrench such as the Valvtool JR-800 JR-804.