Ferrules, for use with low pressure, tubing connectors. Use with flange free, 1/16 inch, low pressure tubing. PTFE. ARE-Applied Research brand. 10/PK.
Use with tubing connector nuts for low pressure tubing connections in HPLC or other fluidic connections.
PTFE (Polytetrafluroethylene) is a fluorocarbon used as a hydrophobic material. PTFE reduces friction, wear and has one of the lowest coefficients of friction against any solid.