Vented seals are first-line — but not every wound favors a vent. A posterior wound facing the ground, a debris-fouled site where vent channels would clog, or the second wound in a two-seal protocol can all seal more reliably with a fully occlusive dressing.
When a vent works against you, what seals the wound?
The HyFin® Chest Seal is the fully occlusive answer — same 6″ × 6″ footprint and enhanced hydrogel adhesive as the HyFin® Vent, with no vent channels. It is the seal for posterior wounds, heavy-debris environments, and the occlusive component in a USMC-style combo approach. NSN 6510-01-532-8019 supports military procurement.
Where It Wins
Posterior & Debris-Rich Wounds
A fully occlusive barrier where vent geometry would face the ground or vent channels would foul.
Combo Protocol Component
The occlusive half when one wound takes a vented seal and the other an occlusive one.
Enhanced Hydrogel
Same aggressive adhesive as the Vent — holds on blood, sweat, and hair.
Burp-Capable Tab
Large red elliptical tab gives a consistent burping mechanism if tension develops after placement.
Non-Vented Use per CoTCCC 2024 TCCC Guidelines
Per the 2024 TCCC Guidelines, vented seals are preferred for all open chest wounds; non-vented seals are applied when a vented seal is unavailable, for posterior wounds where venting cannot function, as the occlusive component of a multi-wound protocol, or where vent occlusion risk is extreme. Whenever a non-vented seal is used, monitor continuously for tension pneumothorax — rising distress, falling SpO₂, tracheal deviation — and be ready to burp the seal or decompress.
Who Carries It
Combat medics / corpsmen — occlusive option for posterior and combo wounds
Tactical & LE medics — debris-environment reliability
Military procurement — NSN-stocked occlusive seal
Pair It Up
An occlusive seal rarely travels alone.
HyFin Occlusive Chest Seal
The Occlusive Half of the Answer
Genuine North American Rescue, shipped from a clinician-founded, veteran-led team.
Genuine North American Rescue
Sourced direct from North American Rescue.
Specifications
| Manufacturer | North American Rescue |
| Item # / SKU | 10-0015 (NAR) / MEDTAC0574 (MED-TAC) |
| NSN | 6510-01-532-8019 |
| Type | Non-vented (fully occlusive) |
| Seal Dimensions | 6″ × 6″ (excl. tab) |
| Weight | 1.44 oz |
| Adhesive | Enhanced hydrogel — bloody / sweaty / hairy skin |
| Guideline Status | Non-vented per CoTCCC 2024 TCCC Guidelines — use when vented unavailable; monitor for tension pneumothorax |
| Origin | Made in USA |
When to Choose the HyFin Chest Seal (Occlusive)
HyFin Individual Occlusive Chest Seal (SKU: 10-0015, NSN: 6510-01-532-8019, SEL#: 09MS-02-THOR):
- 1× HyFin Occlusive Chest Seal — 6 in. × 6 in., transparent, with red elliptical tab
- Enhanced adhesive gel — bonds in blood, sweat, and hair
- Writeable seal surface for patient treatment documentation
- Individually packaged in Red-Tip Technology foil pouch
Fully occlusive — no pressure relief vents. Packaged: H 4.625 in. × W 7.5 in. × D 0.1 in. | Weight: 1.44 oz. Made in America, 100% latex free.
- Posterior / back chest wounds on supine patients — the standard use case for an occlusive seal: a vented seal placed on the back wound of a patient lying on their back can have the valve occluded by blood pooling. The occlusive HyFin eliminates that failure mode.
- Post-needle-decompression site coverage — after ARS or finger thoracostomy, the decompression site is covered with an occlusive seal. Tension pneumo risk has been reduced by active decompression; the occlusive seal closes the hole.
- USMC and SOF protocols — the occlusive component — protocols specifying one vented + one occlusive use this as the occlusive seal. It is the non-vented component in the USMC HyFin Combo Pack (85-1045).
- Writeable surface for patient documentation — the transparent seal surface accepts permanent marker; write application time and provider initials directly on the seal without additional tape.
- IFAK secondary seal staged alongside a primary HyFin Vent — the specific wound presentation determines which seal you reach for; stage both types and let clinical presentation guide selection.
Occlusive vs. Vented — the clinical decision: Default to vented (HyFin Vent) for any penetrating chest wound where the patient has not been decompressed. Use occlusive (this product) for posterior wounds on supine patients, post-decompression site coverage, or per your specific unit protocol.
Monitor continuously: Any patient with an occlusive chest seal must be reassessed for tension pneumo every 5 minutes during transport. Signs: worsening dyspnea, decreasing SpO2, JVD, tracheal deviation. If tension pneumo develops under an occlusive seal, decompress immediately — do not lift-and-burp an occlusive; treat with ARS.
HyFin Occlusive Chest Seal vs. Alternatives
HyFin Chest Seal (Occlusive, 10-0015) vs. HyFin Vent (10-0037 twin): Same 3M enhanced adhesive, same 6 × 6 inch format, same Red-Tip Technology packaging, same application technique. Only difference: no pressure relief channels on the occlusive. Which you use depends on wound location and decompression status — not preference.
HyFin Chest Seal vs. Halo Seal (non-vented): Both are CoTCCC-referenced occlusive chest seals with enhanced adhesive. HyFin enhanced adhesive gel has demonstrated stronger adhesion in wet-skin comparative testing. Both are clinically acceptable; HyFin is the more commonly procurement-specified in military and LE contracts.
HyFin Chest Seal (single, 10-0015) vs. USMC Combo Pack (85-1045): The single HyFin Chest Seal is ordered when you need the occlusive component alone. The USMC Combo Pack contains one HyFin Vent + one HyFin Chest Seal in a single resealable pouch — order the Combo Pack if your unit runs the vented/occlusive dual-seal protocol.
HyFin Chest Seal vs. Asherman Chest Seal: The Asherman is a vented product — not an occlusive seal and not a direct comparison. For occlusive chest wound coverage, the HyFin Chest Seal (10-0015) is the purpose-built choice.
Frequently Asked Questions
Q: How is this different from the HyFin Vent?
A: The HyFin Chest Seal (10-0015) is fully occlusive — no pressure relief channels. The HyFin Vent uses a patented 3-channel valve that vents on exhalation and occludes on inhalation. Same 6 × 6 inch size, same enhanced adhesive, same application technique. The clinical difference is significant: the vented version allows tension pneumo relief through the valve; the occlusive does not.
Q: When would I use this instead of the vented version?
A: Three primary indications: (1) Posterior wounds on a supine patient — blood pools against the back, which can occlude a vented valve. (2) Post-needle-decompression site coverage — tension pneumo has been addressed; occlusive seals the hole. (3) Unit protocol specifies occlusive for the exit wound (USMC protocol). When in doubt, use the vented version — it is the safer default for anterior wounds.
Q: What is the NSN for procurement?
A: NSN: 6510-01-532-8019. SEL#: 09MS-02-THOR (CoTCCC medical device selection list). MED-TAC is SDVOSB-certified for government procurement support. Contact orders@tactical-medicine.com.
Q: Can I write on the seal after application?
A: Yes. The transparent seal surface accepts permanent marker — write application time and your initials directly on the seal. This is a deliberate design feature for patient tracking in mass casualty and CASEVAC settings. Use a permanent marker (Sharpie), not a washable marker, which smears under bloody/wet conditions.
Q: Is this sold as a single unit or in packs?
A: The HyFin Chest Seal (10-0015) is a single-unit item. For a vented + occlusive combination, see the USMC HyFin Chest Seal Combo Pack (85-1045). For two vented seals, see the HyFin Vent Chest Seal Twin Pack (10-0037).
Related searches: HyFin occlusive chest seal, non-vented chest seal, North American Rescue HyFin, posterior chest wound seal, NSN 6510-01-532-8019, 6x6 occlusive seal, made in USA chest seal
All products sourced direct from North American Rescue. CoTCCC recommendation status verified where applicable. Ships from MED-TAC International, Pembroke Pines, FL — clinician-founded, veteran-led, SDVOSB-certified.
Specifications coming soon. Contact us for detailed product information.
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