... Vents O-Ring Automotive lighting vent membrane Reduce condensation, prevent contamination, Equalize pressure, gas permeable, oleophobic , waterproof ,anti –dust1.Because of the ... the housing and the external environment. Micro-VENT automotive vent membrane IP rate varies from IP65, IP67, IP68 to IP69 ... "Degrees of protection provided by enclosures (IP code ) standard. breathe waterproof vent membrane