Trane RNG2133 O-Ring Refrigerant Only

The Trane RNG2133 is a Trane-designated O-ring for use on HVAC equipment that holds refrigerant. O-rings are mainly small ring-shaped components made of unique rubber or any other elastic material. Their primary purpose is to provide a barrier against the leakage of refrigerants at connections within the HVAC system. Measuring 0.41” in diameter and 0.275” in thickness, it surrounds these connections and does not allow refrigerant loss. A functioning O-ring is critical to keeping your HVAC system not only running effectively and safely but also free from leaked refrigerants.