A bearing isolator apparatus is for use in a piece of equipment which includes a rotatable shaft and a housing through which the shaft extends. The apparatus includes a static component for securing to the housing and a rotational component for securing to the shaft. A tortuous fluid path extends between the static component and the rotational component and a plurality of electrically conductive filaments extends between the static component and the rotational component, such that an electrical current can pass between the components. One or more conductive members electrically connect the rotor to the shaft.