>B< MaxiPro fittings for refrigeration and air conditioning applications are identified with a black O-ring, fittings are identified by a pink mark on the fitting body.
*Important Note: The O-ring colour and identification must meet the application. O-ring in the fittings are not to be removed or changed.
>B< MaxiPro refrigeration and air conditioning range uses a high quality HNBR O-ring that forms a secure leak-free joint when pressed.
The specially formulated HNBR used allows the o-ring to operate in the temperature range of -40°C to 140°C