WHAT IS A TEFLON ENCAPSULATED O-RING?
A Teflon encapsulated o-ring is a chemically resistant seal used in industry to prevent passage of corrosive fluids or gases. It is made of two components: (1) A Teflon encapsulation (i.e. jacket or covering), and (2) an elastomer (i.e. rubber) core material, which is completely enclosed within the encapsulation.