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What is the air permeability rate of Sensor ePTFE Vents

2025-07-11

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ePTFE Vents: Air Permeability Characteristics

Permeability Range Overview

The air permeability rate of Sensor ePTFE Vents typically ranges from 5,000 to 50,000 mL/min/cm² at a pressure difference of 125 Pa. This broad spectrum enables customization for diverse application requirements.

  • Standard products cover most industrial needs
  • Custom formulations available for extreme conditions
  • Linear airflow characteristics ensure predictable performance

Key Influencing Factors

Manufacturers precisely control membrane microstructure during production to achieve desired permeability while maintaining protective properties.

  • Porosity: Higher pore density increases airflow
  • Membrane thickness: Thicker = more durable but slightly reduced flow
  • Pore distribution: Affects directional flow characteristics

Application-Specific Recommendations

"For medical devices requiring sterilization cycles, we recommend mid-range permeability (15,000-25,000) with reinforced membrane structure."

  • Electronics: 10,000–20,000 mL/min/cm² (pressure equalization)
  • Industrial sensors: 30,000–50,000 mL/min/cm² (rapid air exchange)
  • Outdoor equipment: Balanced for dust resistance

Testing & Reliability

Permeability measurements follow ASTM F316 standards under controlled laboratory conditions.

  • Certified test reports available upon request
  • Long-term performance tracking data
  • Accelerated aging tests confirm stability

Properly specified vents maintain their permeability rating throughout the product lifecycle unless physically compromised.