Glass Filled PTFE has improved wear properties as well as deformation strength due to the added glass fibre. Along with that, the coefficient of friction is also slightly improved.
It has exceptional resistance to chemicals and along with all its other features, it is one of the most versatile plastic materials known. This makes Glass Filled PTFE useful for a wide range of products that other materials generally don’t work for.
The added glass fibres also reduces the porosity and gas permeability.