The new range of PTFE swivels focus on reducing the frictional resistance created by helicopter rigs. Sliding the leader up and down is essential to avoid tangles. The PTFE coating facilitates this sliding and increases fluidity.
In scientific terms, PTFE coating is a synthetic polymer that has one of the lowest friction coefficients of all solids. This is perfect for swivels as it reduces friction between the body and the swivel eyelet, allowing them to rotate freely naturally reducing tangles.