Kunshan Xinzhenpin New Thin Film Material Technology Co LTD.
| Waterproof Rating | IP68 |
| Operating Temperature | -40°C to +150°C |
| Water Entry Pressure | ≥ 400 kPa |
| Thickness | 0.10 – 0.50 mm |
| Size | Customizable |
| Oleophobicity Grade | ≥ 7 |
| Chemical Resistance | Corrosion-resistant，Acid-resistant |
| Packaging Details | Small orders by express; bulk orders by FCL sea freight. |
| Moisture Vapor Transmission Rate | 8,000 – 18,000 g/m²·24h |
| 90° Peel Strength | ≥ 15 N/25mm |
| Material Compliance | PFAS Free |
| Supply Ability | Monthly Output: 300,000 sqm |
| Delivery Time | 15 working days |
| Payment Terms | T/T |
| Air Permeability | Gurley：3 – 30 s/100ml @ 300 ml |
| Color | White |
| Place of Origin | China |
| Brand Name | OEM/ODM |
| Model Number | OEM/ODM |
| Certification | IATF16949/ISO |
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Product Specification
| Waterproof Rating | IP68 | Operating Temperature | -40°C to +150°C |
| Water Entry Pressure | ≥ 400 kPa | Thickness | 0.10 – 0.50 mm |
| Size | Customizable | Oleophobicity Grade | ≥ 7 |
| Chemical Resistance | Corrosion-resistant，Acid-resistant | Packaging Details | Small orders by express; bulk orders by FCL sea freight. |
| Moisture Vapor Transmission Rate | 8,000 – 18,000 g/m²·24h | 90° Peel Strength | ≥ 15 N/25mm |
| Material Compliance | PFAS Free | Supply Ability | Monthly Output: 300,000 sqm |
| Delivery Time | 15 working days | Payment Terms | T/T |
| Air Permeability | Gurley：3 – 30 s/100ml @ 300 ml | Color | White |
| Place of Origin | China | Brand Name | OEM/ODM |
| Model Number | OEM/ODM | Certification | IATF16949/ISO |
| High Light | Headlight M12 Eptfe Bolt Vent ，Universal Waterproof Breathable Vent ，Headlight Gearbox Breather Vent | ||
M12 Universal Waterproof Breathable Bolt Vent ePTFE Membrane for Headlight Gearbox
The M12 universal waterproof breathable bolt vent is a threaded pressure equalization component engineered with an advanced ePTFE membrane. It effectively seals enclosures against water, dust, and contaminants while allowing continuous air exchange. This vent prevents vacuum build-up and condensation inside headlights, gearboxes, and industrial housings. Its robust design ensures long service life even under harsh thermal cycling and exposure to road chemicals. Simple screw-in installation makes it an ideal choice for OEMs and aftermarket replacements.
Sealed enclosures such as automotive headlights and gearboxes experience dramatic temperature fluctuations during operation. When a warm housing cools down rapidly, a negative pressure differential forms, drawing moist air past imperfect seals. This moisture condenses into water droplets, causing fogging, corrosion, and lubricant degradation. Traditional solid plugs completely seal the unit, allowing pressure to build up and force oil past seals, resulting in leaks and premature failure.
By installing an M12 universal breathable bolt vent, you provide a dedicated pathway for pressure equalization while blocking water ingress. The ePTFE membrane has micropores large enough for air molecules to pass but thousands of times smaller than a water droplet. Internal humidity escapes before it can condense, and external water, brake dust, and oil splash are reliably repelled. This simple component significantly extends the reliability of lighting systems and drivetrain components, reducing warranty claims and maintenance costs.
Thread size: M12 x 1.5
Body material: Nickel-plated brass or stainless steel
Membrane: Hydrophobic ePTFE
Waterproof rating: IP67 / IP68
Airflow: 400 ml/min @ 70 mbar
Operating temperature: -40°C to 150°C
Burst pressure: > 1 bar
Designed for universal use across automotive, marine, and outdoor electronics. Typical installations include headlight housings, fog lamp enclosures, manual transmission cases, transfer cases, and differentials. It is also widely used in industrial sensor boxes and small outdoor communication units where moisture control is critical.
The bolt vent is screwed directly into a threaded port on the enclosure. When internal air pressure rises due to heat generated by bulbs or moving gears, expanded air exits through the microporous membrane. As the system cools and contracts, ambient air is drawn back in. The ePTFE membrane acts as a selective barrier: water molecules cannot penetrate due to surface tension, but gases and water vapor flow freely. This dynamic breathing process continuously equalizes pressure without ever allowing liquid water entry.
First confirm the thread specification of your housing port. M12 x 1.5 is the most common size, but always measure pitch with a gauge. Select body material based on operating environment: stainless steel for corrosive chemicals or high salinity, nickel-plated brass for general automotive use. Ensure the IP rating matches your exposure level; IP68 is needed for frequent submersion. Finally, verify the airflow rate is sufficient for your internal air volume to avoid slow pressure equalization.
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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