High Efficiency Element: Used for Most Open and Closed Systems For use with Filter Housing Series 6000. Designed for use in Racor CCV system filter housings, CCV replacement elements utilize depth-loading, micro-glass, fiber coalescing Vaporbloc media to remove oil contamination from engine bypass gases before they damage critical engine components and surrounding equipment. The replacement filters offer exceptional oil mist separation and are capable of coalescing vapor and contaminants down to 0.3 microns.