In an ideal scenario, ePTFE has a certain pressure-bearing potential. Theoretically, under short-term extreme conditions, it can endure relatively high pressures. However, in real-world applications, this value is often adjusted due to various factors.

• Unique molecular structure with tightly packed chains
• Excellent flexibility and fatigue resistance
• High pressure-bearing potential in ideal conditions
• Performance varies in real-world applications

A thicker membrane can better distribute pressure, enhancing the vent's ability to withstand higher pressures. If the membrane is too thin, it may be more prone to rupture under pressure.

• Membrane thickness is a key determinant of pressure resistance
• Thicker membranes distribute pressure more effectively
• Vent shape and size significantly impact performance
• Compact designs with uniform stress distribution perform better

Additionally, the shape and size of the vent also matter. A well-designed shape can optimize the stress distribution within the vent, enabling it to bear more pressure. Smaller vents with a more compact structure might be able to handle higher pressures compared to larger, more complexly shaped ones, as the former have a more uniform stress distribution.

In low-temperature environments, ePTFE becomes more rigid, which may increase its initial pressure resistance to some extent. However, this also reduces its toughness, making it more brittle and potentially more vulnerable to sudden pressure changes.

• Low temperatures increase rigidity but reduce toughness
• High temperatures soften the material and reduce strength
• Extreme heat can significantly decrease pressure-bearing capacity
• Long drives in hot weather can affect vent performance

In high-temperature environments, ePTFE softens. As the temperature rises, the molecular chains in the ePTFE become more mobile, reducing the material's strength and stiffness. As a result, the vent's pressure-bearing capacity decreases significantly. For example, if the taillight is exposed to extremely high temperatures during a long drive on a hot summer day, the ePTFE vent may be less able to withstand the internal pressure generated by the heat expansion of the air inside the taillight.

Dust particles can accumulate on the vent surface and in its pores over time, blocking the ventilation channels and increasing the internal pressure within the taillight.

• Dust accumulation blocks ventilation channels
• Saltwater exposure can chemically damage ePTFE
• Internal structure may be compromised without visible signs
• Regular inspection is crucial in harsh environments

Saltwater can chemically react with the ePTFE material, weakening its structure and reducing its pressure resistance. Even if the vent appears intact visually, its internal structure may have been compromised, reducing its ability to withstand pressure.