Pressure Relief Balanced Membrane wide temperature range

Water ingress into sealed housings, condensation and fogging, and internal/external pressure differentials can lead to device failure or performance degradation. There is a need to balance protection with breathability/sound transmission.

With the Pressure-Relief Balanced Membrane – High Temperature Resistant, Explosion-Proof, Pressure Stabilizer, Specially for Vehicle Security Devices – Shenzhen Sandeli Precision Technology, we achieve IP-level protection while maintaining breathability/sound transmission. We support custom die-cutting, adhesive backing, and specifications tailored to your structure.

Pressure-Relief Balanced Membrane – Pressure Equalization Solution

Shenzhen Sandeli Precision Technology Co., Ltd. specializes in the R&D and precision die-cutting of pressure-relief balanced membranes, solving problems such as housing deformation and seal failure in sealed devices caused by temperature differences and air pressure changes.

Sealed electronic devices generate heat during operation, causing internal air to expand and create positive pressure; upon cooling, negative pressure is created. Repeated positive and negative pressure changes can lead to:

• Deformation of housing sealing rings, resulting in waterproof failure
• Water ingress and dust penetration at housing seams
• In extreme cases, housing rupture

After installing a Pressure-Relief Balanced Membrane, internal and external air pressure are automatically balanced while maintaining waterproof and dustproof functions, significantly extending device service life.

Based on equipment cavity volume, operating temperature range, and airflow rate requirements, we can recommend the optimal membrane specification and installation solution. Various installation methods are available, including welding type, adhesive type, and snap-fit type.

1. Determine Opening Size & Structure
   Provide the diameter or length/width dimensions of the housing opening to confirm membrane specifications, adhesive type, and die-cut shape.
2. Confirm Protection Level Requirements
   Select IP65, IP67, or IP68 based on your application scenario. The protection level determines the membrane material and lamination process.
3. Identify Operating Environment
   Factors such as temperature, humidity, oil contamination, or chemical exposure influence material selection and service life evaluation.
4. Define Performance Priorities
   Rank key indicators—such as airflow rate, acoustic transmission, and water pressure resistance—according to your actual application to avoid over-engineering.
5. Request Free Sample Testing
   Provide structural drawings and test conditions. Our technical team will deliver a tailored solution within 48 hours and send samples for your verification.

1. Ultra-High Airflow for Rapid Pressure Equalization
2. IP67/IP68 Waterproof & Dustproof Protection
3. Wide Temperature Range for Harsh Environments
4. Customizable Adhesive & Die-Cut Solutions
5. Ultra-Thin Design for Space-Constrained Devices
6. Long-Term Reliability

The ePTFE microporous structure of the Pressure-Relief Balanced Membrane allows gas molecules to pass freely under pressure differential drive. When positive or negative pressure is generated inside the cavity due to temperature changes, altitude variations, or internal heating, the membrane rapidly balances internal and external pressure, preventing seal failure caused by excessive pressure differentials, while blocking water, dust, and salt spray ingress.

Based on equipment cavity volume, operating temperature range, and airflow rate requirements, we can recommend the optimal membrane specification and installation solution. Various installation methods are available, including welding type, adhesive type, and snap-fit type.