... pressure, 4.gas permeable, oleophobic , 5.waterproof , Protective vents Reduce condensation, prevent contamination, Equalize pressure, gas ... , waterproof ,anti –dustBrief introduction of the Protective Snap-In VentsProtective vents are placed over ports ... UV-resistant ,temperature-resistant .Less expensive seal designs and less housing material are enabled, reducing tooling design and cost. protective ...