Vented Chest Seals — Open & Sucking Chest Wounds | MED-TAC

Chest Seals

Quick Filters:

IFAK Kits Tourniquets Chest Seals Bleeding Control Body Armor Packs & Bags

How a Chest Seal Works

A penetrating chest wound can open a path for air to enter the pleural space from outside. As that air accumulates, it collapses the lung and — if pressure keeps building — pushes the mediastinum across, choking off venous return in a tension pneumothorax. A chest seal is an occlusive dressing that closes the hole so the lung can work, while a vented design gives trapped air a one-way path out.

Vented vs. non-vented

Type	How it works	Note
Vented	One-way valve or channels let air escape but not re-enter	CoTCCC-recommended; lowers tension-pneumothorax risk
Non-vented	Fully occlusive; requires manual "burping" if pressure builds	Acceptable when a vented seal isn't available

Application doctrine

Expose and dry — wipe the skin so the seal adheres; blood and sweat defeat the adhesive.
Seal entry and exit — a through-and-through wound needs a seal on both sides.
Watch for tension — rising distress means lift or "burp" a non-vented seal, or confirm the vent is clear.
Carry two — most penetrating chest wounds warrant more than one seal.

Stocking for penetrating trauma? Carry vented seals in pairs alongside hemorrhage control. Anchor your loadout with the trauma-response brief.

Frequently Asked Questions

What is a chest seal used for?

It closes an open chest wound so air can't enter the chest cavity from outside and collapse the lung. Vented seals also let trapped air escape, reducing the chance of a tension pneumothorax.

What is the difference between a vented and non-vented chest seal?

A vented seal has a one-way valve or channels that let air out but not back in; a non-vented seal is fully occlusive and must be lifted or burped if pressure builds. CoTCCC recommends vented designs.

Do I need to seal both sides of a chest wound?

Yes, if the wound is through-and-through. A gunshot or penetrating injury with an exit wound needs a seal over both the entry and the exit, which is why kits commonly carry two.

How do you burp a chest seal?

If a casualty with a non-vented seal develops rising breathing difficulty, lift one edge of the seal briefly to let trapped air escape, then reseal. A vented seal is designed to do this automatically.

Will a chest seal stick to bloody skin?

Adhesion is the weak point. Wipe the skin as dry as possible before applying, and press firmly around the whole edge. Carry a backup, since blood and sweat can defeat the adhesive.

Related collections

MED-TAC International Corp. is a clinician-founded, veteran-led tactical medicine provider. Product references to CoTCCC reflect committee recommendations and do not imply FDA approval or certification. This content is educational and is not a substitute for hands-on training or medical direction.

Evidence-Based Selection

CoTCCC Aligned

SDVOSB Certified

500+ Agencies

Why MED-TAC's Evidence-Based Approach Outperforms

Multi-brand curation means optimal performance — not vendor compromises.

Multi-Brand Curation

We select the best component from each manufacturer — not whatever a single vendor pushes.

✓ Best tourniquet from Company A (98% effectiveness)
✓ Superior hemostatic from Company D (clinical proven)
✓ Optimized kit performance over vendor politics

Evidence-Based Selection

Components chosen based on clinical studies and field data — not marketing claims.

98%

Tourniquet Effectiveness

94%

Hemostatic Success

96%

Chest Seal Adhesion

95%

User Satisfaction

Professional Validation

Trusted by professionals across law enforcement, EMS, and corporate safety programs.

500+

Law Enforcement

250+

EMS Departments

1000+

Corporate Programs

50K+

Individuals Trained

CoTCCC Aligned

Current Guidelines

Stop the Bleed

Partner Program

SDVOSB Certified

Veteran-Owned Business

SAM Registered

Federal Contractor

Language

Country/region

Chest Seals

Filter and sort

Filter

17 products

Sort by:

How a Chest Seal Works

Vented vs. non-vented

Application doctrine

Frequently Asked Questions

Related collections

Why MED-TAC's Evidence-Based Approach Outperforms

Multi-Brand Curation

Evidence-Based Selection

Professional Validation

My Wishlist

Compare

Find Your Mission-Ready Trauma Kit

What's your primary operating environment?

Who are you equipping?

How will the kit travel?

What's the highest injury risk you prepare for?

What's your medical training level?

Do you have a K-9 partner?

What's your budget range?

Do you want a fully stocked kit, or would you rather build your own?

Almost there. Where should we send your kit recommendation?