Kunshan Xinzhenpin New Thin Film Material Technology Co LTD.
| Oleophobicity Grade | ≥ 7 |
| Color | White |
| Moisture Vapor Transmission Rate | 8,000 – 18,000 g/m²·24h |
| 90° Peel Strength | ≥ 15 N/25mm |
| Operating Temperature | -40°C to +150°C |
| Chemical Resistance | Corrosion-resistant，Acid-resistant |
| Waterproof Rating | IP68 |
| Thickness | 0.10 – 0.50 mm |
| Material Compliance | PFAS Free |
| Supply Ability | Monthly Output: 300,000 sqm |
| Payment Terms | T/T |
| Packaging Details | Small orders by express; bulk orders by FCL sea freight. |
| Air Permeability | Gurley：3 – 30 s/100ml @ 300 ml |
| Delivery Time | 15 working days |
| Size | Customizable |
| Water Entry Pressure | ≥ 400 kPa |
| Place of Origin | China |
| Certification | IATF16949/ISO |
| Brand Name | OEM/ODM |
| Model Number | OEM/ODM |
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Product Specification
| Oleophobicity Grade | ≥ 7 | Color | White |
| Moisture Vapor Transmission Rate | 8,000 – 18,000 g/m²·24h | 90° Peel Strength | ≥ 15 N/25mm |
| Operating Temperature | -40°C to +150°C | Chemical Resistance | Corrosion-resistant，Acid-resistant |
| Waterproof Rating | IP68 | Thickness | 0.10 – 0.50 mm |
| Material Compliance | PFAS Free | Supply Ability | Monthly Output: 300,000 sqm |
| Payment Terms | T/T | Packaging Details | Small orders by express; bulk orders by FCL sea freight. |
| Air Permeability | Gurley：3 – 30 s/100ml @ 300 ml | Delivery Time | 15 working days |
| Size | Customizable | Water Entry Pressure | ≥ 400 kPa |
| Place of Origin | China | Certification | IATF16949/ISO |
| Brand Name | OEM/ODM | Model Number | OEM/ODM |
| High Light | Miniature Waterproof Screw Vent M5 M6 ，ECU Sensor Housing Breather Vent ，Screw In Vent Plug | ||
Miniature Waterproof Breathable Screw Vent M5 M6 Thread For ECU Sensor Housing
Product Overview
The miniature waterproof breathable screw vent offers precision pressure equalization for compact electronic housings. Available in M5 and M6 thread sizes, it integrates a tiny yet effective ePTFE membrane into a diminutive metal or plastic body. This vent protects automotive ECUs, sensors, and small handheld instruments from moisture ingress while allowing them to adapt to ambient pressure changes without housing distortion.
Cause
Electronic control units and sensitive sensors are often fully potted or gasket-sealed against automotive fluids. However, the small internal air pockets still expand and contract with temperature, leading to excessive stress on the potting compound and wire bonds. Even a tiny amount of condensation can corrupt a MEMS sensor or cause leakage currents on a PCB. Conventional vents are too large to fit these miniaturized enclosures.
Solution
The M5 or M6 miniature screw vent occupies minimal footprint, screwing directly into a blind threaded hole in the housing wall. The ePTFE membrane provides a bi-directional airflow path, maintaining zero differential pressure. It stops water, dirt, and chemicals from entering while allowing the housing to breathe. The result is extended sensor life and consistent output accuracy without mechanical deformation.
Specifications
Thread options: M5x0.5, M6x1.0
Body material: Brass or PA66
Membrane: ePTFE on PET support
IP rating: IP67
Airflow: 80 ml/min @ 70 mbar
Temperature: -40°C to 125°C
Overall length: 8 mm
Application
Designed for automotive engine ECUs, ABS sensor modules, 48V battery management controllers, outdoor temperature sensors, pressure sensor reference cavities, and handheld GPS devices.
How It Works
As the sensor module warms up from electronics or external heat, internal pressure rises. Air exits through the membrane’s nanopores. When the unit cools, air returns. The membrane pore size is below 0.2 microns, blocking liquid water and dust particles. Because the airflow rate is matched to the tiny internal volume, pressure equalization happens almost instantaneously.
How To Choose
Measure the available boss thickness and select a thread that provides at least four full threads engagement. For sensor applications where metal contamination is a concern, choose the plastic PA66 body. Consider the airflow: if the unit has a slightly larger volume, specify the M6 version for higher flow.
FAQ
Q: Can this vent withstand under-hood chemical splash?
A: The ePTFE membrane is chemically inert to most automotive fluids. The brass body offers good resistance; for aggressive acids, use a stainless version.
Q: Is it compatible with automated pick-and-place assembly?
A: Yes, the hexagonal body can be driven with a standard socket driver. Some suppliers offer tape-and-reel packaging for automated insertion.
Q: How do I test if the vent is working?
A: Apply a gentle vacuum to the housing leak test port. The pressure should not decay rapidly, but a very slow decay indicates the membrane is breathing.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2018
Total Annual:
1,000,000-2,000,000
Employee Number:
30~50
Ecer Certification：
Verified Supplier
Kunshan Xinzhenpin New Thin Film Material Technology Co., Ltd. Established in 2018, Kunshan Xinzhenpin is a specialized manufacturer dedicated to ePTFE waterproof and breathable membrane solutions. We operate a fully integrated production chain covering ePTFE raw membrane manufacturing, composite a... Kunshan Xinzhenpin New Thin Film Material Technology Co., Ltd. Established in 2018, Kunshan Xinzhenpin is a specialized manufacturer dedicated to ePTFE waterproof and breathable membrane solutions. We operate a fully integrated production chain covering ePTFE raw membrane manufacturing, composite a...
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