IP69K High Temperature Resistant Breather Bolt Vent Automotive Engine Bay Industrial

The IP69K high temperature resistant breather bolt vent is engineered for the most extreme heat and high-pressure washdown environments. It withstands steam cleaning processes and continuous temperatures up to 200°C without degradation. The stainless steel body and specialized ePTFE membrane make it suitable for engine bay electronics, exhaust sensor housings, and food processing equipment that demand zero water ingress under high-temperature jets.

Automotive engine bays and industrial food processing zones are routinely cleaned with high-pressure steam and hot water. Standard breather vents with lower temperature ratings embrittle, leak, or suffer membrane failure under these conditions. Ingress of water at high pressure can instantly destroy sensitive electronics. The combination of thermal cycling and aggressive cleaning demands a vent that exceeds IP68 specifications.

The IP69K breather bolt vent utilizes a high-temperature stabilized ePTFE membrane and a 316L stainless steel body. It is tested to withstand close-range high-pressure steam jets at up to 100 bar and 80°C. The vent equalizes pressure due to rapid engine heat-up and cool-down while preventing any water intrusion, even from directed spray nozzles. It maintains performance in the presence of oil, fuel vapors, and alkaline cleaning agents.

• Thread: M12x1.5, M16x1.5
• Body: 316L stainless steel
• Membrane: High-temp ePTFE
• IP rating: IP69K
• Max continuous temperature: 200°C
• Pressure resistance: 100 bar water jet
• Airflow: 450 ml/min @ 70 mbar

Designed for under-hood engine control modules, transmission control units mounted near exhaust, exhaust gas recirculation sensor housings, commercial kitchen appliance enclosures, and pharmaceutical washdown equipment.

As the engine compartment temperature soars, internal air pressure rises and is vented through the membrane. When the vehicle enters a car wash with hot steam, the membrane’s microporous structure and the robust seal resist the high-pressure jet impact. Water remains on the surface, and the rapid temperature drop is accommodated without condensation because the membrane continues to breathe. The stainless body radiates heat, protecting the polymer membrane from direct flame exposure.

Confirm that your enclosure port thread matches one of the available sizes. Verify the actual steam jet pressure and distance in your cleaning protocol; IP69K demands a specific test standard. For mounting positions directly in the path of a spray nozzle, add a protective shield if possible.

Q: Is IP69K the same as IP68?

A: No. IP68 covers continuous immersion; IP69K is specifically for high-pressure, high-temperature water jets. A vent can be dual-rated.

Q: Can the membrane handle repeated steam cycles?

A: Yes, the specialized ePTFE is formulated to resist thermal hydrolysis and maintain waterproofness through thousands of cycles.

Q: Does it require a special gasket?

A: A high-temperature metal-reinforced gasket or copper washer is recommended for mounting surfaces exceeding 150°C.