Question: "How does it work?" Answer: The Hyfin Vent Chest Seal functions by 3 one-way check valves that will allow air and liquid to exit but not enter the chest via a puncture in the pleura. It is intended to prevent a lung from collapsing (aka pneumothorax). Additional Information: This product is a first-aid treatment for a "sucking chest wound" (e.g. stabbing, gun shot, or other puncture to the pleural cavity). IT DOES NOT REPLACE SURGERY. If applied to such a wound, I strongly recommend you call 911 or urgently seek professional medical attention. You have 2 lungs. One vent is required for each lung (not each wound). Gunshot wounds to the chest typically result in 1 entry and 1 exit wound. If dealing with one lung, a vent should be placed at one wound and the other can be sealed with appropriate tape. The remaining vent could then be saved for the other lung. This is may be advanced first-aid. If in doubt, use one vent per hole. Older versions of this product had 1 vent. If you have this type of vent, ensure the vent is placed at the low point of the wound (closest to the ground). Closing Remarks: User "SJH" isn't completely wrong, but I would ONLY use tape and plastic sheets to make a check valve as a last resort improvisation. If you are unsure of first aid procedures and equipment, and place a higher value on life than the cost of training -- get training! Don't be someone who dies, or watches someone die, before the ambulance arrives. Understand how to use ALL the equipment in your kit. Don't wait until an incident happens to figure out how to use an item, it could determine life or death. I hope you found this information useful.

Thank you for your inquiry, Nate! The expiration date on our current stock of North American Hyfin Vent Chest Seal Twin Packs is May 2025 (05-2025). Please feel free to contact us with any further questions. Semper Paratus!

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North American Rescue

Q: How does an untrained bystander know whether the use of this product is appropriate? Thx

See a lot of good answers here. Some are unclear though, or don't address liability. So here's the skinny. If you are untrained DO NOT attempt to use this. If you are insistant on having it for a unknown situation, buy a couple and find someone who is trained to use them, and ask them to show you. Hospitals offer basic first aid/for classes, so taking one of those and bringing this item up would be a good bet. NEVER attempt to go beyond your scope of training, both for their safety, and yours, as well as your liability. If you do, and they survive but with complications, or they die, you can be held civilly liable, in some cases even criminally liable. It sucks, but that's the way it is. Best bet is to always just call 911 and apply pressure to wound if it's bleeding heavily.

Product ID: 2883883

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Details

Brand
North American
Special Feature
Compact
Number of Pieces
1
Recommended Uses For Product
Emergency
Color
Clear

💪Advanced adhesive for tough conditions

🔴Large red peel-and-apply tab

🩹3-channel pressure relief vents

Frequently Bought Together

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Description

🩺 Seal the deal on trauma care—because every second counts!

DUAL SEAL TWIN PACK - Treat both entry and exit wounds or multiple injuries with two ready-to-use chest seals.
ONE STEP APPLICATION - Large, easy-grip red tab enables quick peel-and-apply action, saving precious seconds in trauma care.
SUPERIOR ADHESION TECH - Advanced adhesive ensures a reliable seal even on sweaty or hairy skin—no slip-ups in critical moments.
TRIPLE VENT PRESSURE RELIEF - Patented 3-channel vents prevent tension pneumothorax with precision airflow control.
ENGINEERED FOR REAL EMERGENCIES - Designed specifically for penetrating chest trauma, trusted by professionals on the front lines.

The North American Rescue HyFin Vent Chest Seal Twin Pack features patented 3-channel pressure relief vents and advanced adhesive technology to effectively manage open and tension pneumothorax from penetrating chest wounds. Designed for rapid, single-step application with a large red tab, these seals provide superior performance even in challenging conditions, making them essential for emergency trauma response.

Have a Question? See What Others Asked

how does it work?

I have heard that people have had problems with chest seals not being sticky enough--- How 'bout deese?

How does an untrained bystander know whether the use of this product is appropriate? Thx

Exp. Date?

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