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SKU: BCS01

Type: Chest Seal

Vendor: Safeguard Medical

Bolin™ Chest Seal — Triple Valve, 6 in.

Name: Bolin™ Chest Seal — Triple Valve, 6 in.
Brand: Safeguard Medical
SKU: BCS01
Price: 22.95 USD
Availability: InStock

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$22.95

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PRODUCT INFORMATION

Bolin™ by Safeguard Medical · Vented Chest Seal

Bolin™ Chest Seal — Triple Valve, 6 in.

A sterile vented chest seal built on a 6 in. rugged polyurethane disc that resists wrinkling, with three one-way valves in a row and a thick hydrogel adhesive that can be lifted and reapplied. Each pouch holds one valved dressing and a gauze pad. It vents air well in animal studies; when the chest keeps bleeding, it needs watching.

Vented — three one-way valves6 in. polyurethane discReapplicable hydrogelSterileNSN 6510-01-549-0939

Three valves vent air reliably. Blood is the Bolin's test — so wipe the skin, keep the valves clear and watch the breathing until someone else takes over.

The short answer

What it is

A sterile, single-use vented chest seal: a 6 in. polyurethane disc with three one-way valves and a thick, reapplicable hydrogel adhesive, packed with a gauze pad.

Use it for

An open or sucking chest wound — front, back or side. The TCCC Guidelines call for a vented chest seal on every one.¹

How it's used

Wipe the skin, remove the backing, center the valves over the hole and press the disc down all around. Seal the exit wound, keep the valves uncovered and watch the breathing.

Who carries it

Military medics and service members, law enforcement, EMS and trained civilians building an IFAK — two seals per kit.

At a glance

Type

Vented — three one-way valves

Seal

6 in. (15.25 cm) diameter disc

Disc

Rugged polyurethane

Adhesive

Thick hydrogel, reapplicable

In the pouch

1 valved dressing + 1 gauze pad

Packaged

19.1 × 20.3 × 0.6 cm

Item

BCS01

NSN

6510-01-549-0939

FDA

Class I, 510(k)-exempt

10 things to know about the Bolin Chest Seal

How the three valves work, what the disc and gel are for, and an honest read of the evidence.

01

Three one-way valves in a row

The Bolin vents through three one-way valves that let air and fluid out and keep air from being drawn back in.^3,6 The patent behind the design places the valves at the center of the seal, each over its own opening, so the wound still vents if the seal is not placed precisely.⁷
02

A 6-inch disc that will not wrinkle

The dressing is a 6 in. (15.25 cm) rugged polyurethane disc, stiff enough to prevent wrinkling as it goes on — a wrinkle in a chest seal is a leak.³
03

Hydrogel that lifts and reseats

A thick hydrogel adhesive layer is strong enough to seal, yet flexible enough to be removed and reapplied as needed³ — useful when the seal has to be burped or repositioned during reassessment.
04

A gauze pad in the pouch

Each sterile pouch holds one valved hydrogel dressing and one gauze pad.^4,5 Use the pad to clear blood and sweat from around the wound before the seal goes on.
05

It out-stuck the Asherman on bloody skin

In a swine open-pneumothorax model (8 per seal), the Bolin and the Asherman both prevented tension pneumothorax after 1,500 mL of air was infused into the chest. On blood-soiled skin, the Bolin's adherence score was 2.7 against the Asherman's 0.4 on a 0–3 scale.⁹
06

In swine, it held off tension where an unvented seal did not

In 8 swine with an open chest wound and an ongoing air leak, the unvented seal led to tension pneumothorax after about 1.4 L of air; the vented seal prevented it.¹⁰ The vented seal in that study was the Bolin and the unvented seal was the Halo.¹¹
07

It struggled when the chest kept bleeding

In a U.S. Army model of a bleeding chest wound in 26 swine, the Bolin succeeded in 0 of 4 animals, against 6 of 6 for the Russell and the Sentinel. The one-way-valve seals did not evacuate blood efficiently: pooled blood either lifted them off the skin or clotted in the valve.¹³
08

Its adhesion dropped after extreme storage

In a Navy study on soiled swine skin, the Bolin was one of five seals selected for full testing, but after about 17 hours of storage at −19.5 °C and 71.5 °C its adherence scores were significantly lower than the Russell, FastBreathe, HyFin and SAM, with the highest detachment and breaching scores.¹² Keep it out of the hottest and coldest corners of a vehicle or kit.
09

Stocked under NSN 6510-01-549-0939

The Defense Logistics Agency issues the Bolin as a package of 10 sterile, 6 in. occlusive dressings with three one-way valves.⁶ Item BCS01 is the single seal. It is made in the USA³ and listed with the FDA as a Class I, 510(k)-exempt occlusive wound dressing.^5,8
10

Not evidence-based standard — and neither is any chest seal

The Evidence-Based Standard Devices & Adjuncts list has no chest-seal entries.² The TCCC Guidelines call for a vented chest seal without naming a brand.¹ Absence from the list does not by itself mean a product was tested and failed.

How to apply the Bolin Chest Seal

The TCCC approach to an open chest wound, with the Bolin's design in mind.

1

Find every hole. Expose the chest and check the back, the sides and the armpits — the back is the wound people miss. Never pack gauze into a chest wound.
2

Cover it now. Put a gloved hand over the hole — or have the casualty use their own — while you open the pouch.
3

Wipe the skin. Use the gauze pad to clear blood, sweat and debris from around the wound.⁴
4

Peel and center. Remove the backing and center the row of valves over the hole.⁷
5

Press the disc down all around. Work from the center out so no channel is left for air to leak in under the edge.
6

Keep the valves clear. Do not cover the valves with a dressing, clothing or tape — a covered valve is a non-vented seal.
7

Seal the second hole. An exit wound gets its own seal. Carry two.
8

Watch — and burp, remove or decompress. Unconscious and breathing: recovery position. Conscious: a position of comfort, often sitting up. If breathing worsens, lift the edge of the seal or remove it; trained providers decompress the chest as the TCCC Guidelines direct.¹

Train before you need it. Every Bolin is sterile and single use.⁵ Practice on a chest seal application trainer, gloved, and keep the live seals sealed in the kit. The reapplicable gel is for burping and repositioning on the same casualty, not for reuse.

Where it fits

Use it for

Open or sucking chest wounds — front, back or side — from gunshot, stab or fragment injuries¹
The exit wound as well as the entry wound: one seal per hole
Wounds you will reassess and may need to burp: the hydrogel lifts and reseats³
Securing a water-impermeable cover over eviscerated abdominal organs that cannot be replaced; the TCCC Guidelines name a chest seal as one adhesive option¹

Not for

Packing — never pack anything into the chest or abdomen
Skin you have not wiped — blood and sweat are what defeat chest-seal adhesion
Covering the valves with other dressings or clothing
Routine use on a patient receiving positive-pressure ventilation — the NAEMSP position is that chest seals may be harmful there¹⁵
Practice — train on a chest seal trainer

The evidence

Every study cited above, what it tested, and how strong it is — including the results that went against the Bolin.

Study	Evidence type	What was studied	What it found
*Arnaud et al., Injury* 2008**	Animal · swine	Bolin vs Asherman on an open pneumothorax, swine (n = 8 per seal); air and blood infusion; adherence on dry and bloody skin	Both prevented tension pneumothorax; on blood-soiled skin adherence 2.7 (Bolin) vs 0.4 (Asherman), p < 0.01
*Kheirabadi et al., J Trauma Acute Care Surg* 2013**	Animal · swine	Vented (Bolin) vs unvented (Halo) seal on an open chest wound with ongoing air leak, 8 swine	The unvented seal led to tension pneumothorax after ~1.4 L of air; the vented seal prevented it
*Arnaud et al., Injury* 2016**	Animal · live swine skin	Adherence of vented seals on soiled swine skin, then after ~17 h storage at −19.5 °C and 71.5 °C	Bolin adherence significantly lower after extreme storage, with the highest detachment and breaching
*Kheirabadi et al., J Trauma Acute Care Surg* 2017**	Animal · swine	Five vented seals on bleeding open chest wounds (hemopneumothorax), 26 swine, challenged with added blood and air	Success: Bolin 0/4, SAM 1/4, HyFin 4/6, Russell 6/6, Sentinel 6/6; valved seals detached or clogged
*Butler et al., J Spec Oper Med* 2013**	Expert review · guideline change	TCCC Guidelines Change 13-02 on open pneumothorax	Vented chest seal first; non-vented if no vented seal is available; monitor and burp, remove or decompress
*Lyng et al. (NAEMSP), Prehosp Emerg Care* 2024**	Expert review · position statement	Structured literature review on EMS care of traumatic pneumothorax	EMS may consider a vented seal in spontaneously breathing patients; seals may be harmful with positive-pressure ventilation

All of the device data are animal studies; there is no human trial of any chest seal brand. The Bolin did well where the challenge was air and lost ground where the challenge was ongoing bleeding and extreme storage. Each study tested the version available at the time.

How it compares

The other vented seals buyers weigh against the Bolin, on the facts that separate them.

	Bolin™ Chest Seal	Russell Chest Seal®	Sentinel™ Chest Seal	SAM® Chest Seal Combo
How it vents	Three one-way valves in a row	Four peripheral apertures in a laminar hydrogel dressing	Dual vents with an internal channel: blood out the lower vent, air out the upper	TRUFLOW™ raised-dome one-way valve on the valved seal; second seal non-valved
Adhesive	Thick hydrogel, removable and reapplicable	Hydrogel on non-woven fabric	360° acrylate (Sentinel 10x™)	Hydrogel that reseals after venting
Seal size	6 in. (15.25 cm) diameter disc	8 × 6 in. (20.3 × 15.2 cm)	6.5 × 6.5 in. (DLA record)	7 × 7 in. (17.8 cm)
Seals per package	1, plus a gauze pad	1	1, plus a gauze wipe	2 — one valved, one non-valved
Bleeding chest wound, swine (2017)	0 of 4 successful¹³	6 of 6 successful¹³	6 of 6 successful¹³	1 of 4 successful (valved seal)¹³
Adhesion after hot and cold storage (2016)	Lowest of five¹²	Held¹²	Dropped in pretesting¹¹	Held¹²
evidence-based standard	No — the list names no chest seal	No — the list names no chest seal	No — the list names no chest seal	No — the list names no chest seal

Designs from each manufacturer; the Sentinel's size from its DLA record. Swine results from Kheirabadi 2017¹³ and Arnaud 2016,¹² with the Sentinel's pretest result as reported by Kuhlwilm 2021.¹¹

Build the system

The laminar-vent alternatives, the trainer, decompression for trained providers, and the rest of the IFAK.

Russell Chest Seal®

8 × 6 in. vented hydrogel seal

Sentinel™ Chest Seal

Dual-vent seal with acrylate adhesive

TrueClot Chest Seal Trainer

Practice seal application — not for casualty care

Dart Target™ Decompression Set

Needle decompression — trained providers only

RAMPART MARCH IFAK Resupply

Safeguard's MARCH-ordered IFAK refill

TMT™ Tourniquet

evidence-based standard limb tourniquet

CELOX™ Rapid Gauze

evidence-based standard hemostatic packing gauze

Emergency Trauma Dressing

Pressure dressing for the bleeding you can wrap

Free from MED-TAC

The Trauma Brief

MED-TAC's free trauma field guide, written by a physician and medical educator — what to do in the first minutes of a severe bleed, step by step.

Get the Brief ›

Questions buyers ask

▾Is the Bolin Chest Seal evidence-based standard?

No. The Evidence-Based Standard Devices & Adjuncts list (15 December 2021) has no chest-seal entries, so no chest seal from any maker is evidence-based standard by name.² Absence from the list does not by itself mean a product was tested and failed. The TCCC Guidelines call for a vented chest seal on every open or sucking chest wound — and the Bolin is vented.¹

▾Why three valves?

Redundancy and placement. The patent behind the design sets three one-way valves at the center of the seal, each over its own opening, so the wound still vents if the seal lands slightly off center.⁷

▾How did it do in the studies?

Mixed. Against air leaks, it held: it prevented tension pneumothorax in two swine models and stuck to bloody skin far better than the Asherman.^9,10 When the chest kept bleeding under the seal it succeeded in 0 of 4 animals,¹³ and its adhesion dropped after storage at extreme temperatures.¹² If the wound is bleeding, watch the seal and the breathing closely, and burp or replace a seal that is lifting or clogged.

▾Vented or non-vented — does it matter?

The TCCC Guidelines call for a vented chest seal first and a non-vented seal when no vented one is available; either way the casualty is watched for a developing tension pneumothorax.^1,14 A vent lowers the risk; it does not remove it.

▾What if breathing gets worse after the seal is on?

Treat it as a possible tension pneumothorax: burp the seal by lifting an edge, or remove it. Trained providers decompress the chest with a needle as the TCCC Guidelines direct.¹ The Bolin's hydrogel can be lifted and reseated for this.³

▾I'm a bystander without a chest seal. What do I do?

Cover the hole with a gloved hand, or have the casualty press their own hand over it. If you have tape and something airtight — a plastic wrapper or bag — you can improvise a cover, but it is hard to do well. Unconscious and breathing: recovery position. Conscious: let them find a position of comfort, often sitting up. Keep watching the breathing until EMS arrives. Civilian guidelines differ on chest seals, and some do not prefer a vented seal.¹¹

▾Does a chest seal belong on a patient being ventilated with a bag?

Not routinely. The National Association of EMS Physicians states EMS may consider a vented seal in spontaneously breathing patients with an open pneumothorax, but that in patients receiving positive-pressure ventilation chest seals may be harmful and are not recommended.¹⁵

▾What's in the pouch — and what does the NSN cover?

One sterile valved hydrogel dressing and one gauze pad.^4,5 NSN 6510-01-549-0939 is issued by the Defense Logistics Agency as a package of 10;⁶ item BCS01 is one seal. Carry two — an exit wound needs its own.

▾Can I reuse it?

No. It is a single-use device.⁵ The reapplicable hydrogel is for lifting and reseating the seal on the same casualty.

Package & specifications

▾In the package — one sterile valved seal and a gauze pad

1× Bolin™ Chest Seal — 6 in. (15.25 cm) polyurethane disc with three one-way valves and a thick hydrogel adhesive
1× Gauze pad
Sterile pouch, 19.1 × 20.3 × 0.6 cm. Single use. A second seal for an exit wound is sold separately.

▾Full specifications

Specification	Detail
Manufacturer	Safeguard Medical (Safeguard US Operating, LLC); design originally from H&H Medical
Product	Bolin™ Chest Seal — sterile vented occlusive chest wound dressing
Item number	BCS01 (single seal)
NSN	6510-01-549-0939 (Defense Logistics Agency unit of issue: package of 10)
Contents	1 valved hydrogel dressing, 1 gauze pad
Valves	Three one-way valves in a row
Disc	6 in. (15.25 cm) diameter rugged polyurethane — resists wrinkling
Adhesive	Thick hydrogel — removable and reapplicable
Packaged size	19.1 × 20.3 × 0.6 cm
Sterility / use	Sterile, single use
Intended use	Initial management of penetrating chest injuries, including open pneumothorax
Patent	U.S. 7,834,231 — Low profile chest seal
FDA	Occlusive wound dressing, product code NAD, 21 CFR 878.4020 — FDA-registered, Class I (510(k)-exempt)
Origin	Made in the USA
TCCC status	Vented chest seal as called for by the TCCC Guidelines; not evidence-based standard — the evidence-based list names no chest seal

▾References — 15 sources

Committee on Tactical Combat Casualty Care. Tactical Combat Casualty Care (TCCC) Guidelines, 1 May 2026.
Committee on Tactical Combat Casualty Care. Evidence-Based Standard Devices & Adjuncts, 15 December 2021.
Safeguard Medical. Bolin™ Chest Seal product page, items BCS-01, BCS-10, BCS-CA — features and specifications, safeguardmedical.com.
Safeguard Medical. Bolin™ Chest Seal pouch labeling: 1 EA valved hydrogel dressing / 1 EA gauze pad; intended use, NSN 6510-01-549-0939.
National Library of Medicine. AccessGUDID device records: Bolin Chest Seal, BCS01 — H&H Medical Corporation, primary DI 00857048006132 (package DIs 00857048006286, 10; 00857048006293, 25); Safeguard US Operating, LLC, HIBCC M689BCS01050 and M689BCS01040.
Defense Logistics Agency. Federal Logistics Information System record, NSN 6510-01-549-0939, Dressing, Chest Seal Wound (Bolin, BCS01): characteristics and unit of issue.
Biddle JR, Harder RH, Bolin CT (H and H Associates Inc). Low profile chest seal. U.S. Patent 7,834,231 B2, granted 16 November 2010.
U.S. Food and Drug Administration. Product classification NAD (Dressing, Wound, Occlusive), 21 CFR 878.4020, Class I, 510(k)-exempt; Establishment Registration & Device Listing — Bolin Chest Seal.
Arnaud F, Tomori T, Teranishi K, Yun J, McCarron R, Mahon R. Evaluation of chest seal performance in a swine model: comparison of Asherman vs. Bolin seal. Injury. 2008;39(9):1082–1088.
Kheirabadi BS, Terrazas IB, Koller A, et al. Vented versus unvented chest seals for treatment of pneumothorax and prevention of tension pneumothorax in a swine model. J Trauma Acute Care Surg. 2013;75(1):150–156.
Kuhlwilm V. The use of chest seals in treating sucking chest wounds: a comparison of existing evidence and guideline recommendations. J Spec Oper Med. 2021;21(1):94–101.
Arnaud F, Maudlin-Jeronimo E, Higgins A, Kheirabadi B, McCarron R, Kennedy D, Housler G. Adherence evaluation of vented chest seals in a swine skin model. Injury. 2016;47(10):2097–2104.
Kheirabadi BS, Terrazas IB, Miranda N, Voelker AN, Arnaud F, Klemcke HG, Butler FK, Dubick MA. Do vented chest seals differ in efficacy? An experimental evaluation using a swine hemopneumothorax model. J Trauma Acute Care Surg. 2017;83(1):182–189.
Butler FK Jr, DuBose JJ, Otten EJ, et al. Management of open pneumothorax in Tactical Combat Casualty Care: TCCC Guidelines Change 13-02. J Spec Oper Med. 2013;13(3):81–86.
Lyng JW, Ward C, Angelidis M, et al. Prehospital trauma compendium: traumatic pneumothorax care — position statement and resource document of NAEMSP. Prehosp Emerg Care. Published online 4 December 2024. doi:10.1080/10903127.2024.2416978.

Genuine Bolin™ — Safeguard Medical

Sourced direct from the manufacturer or an authorized master distributor. Ships from MED-TAC International, South Florida, US of A — clinician-founded, veteran-led, SDVOSB-certified.

Built around MARCH. Every kit we sell maps to the MARCH protocol — Massive hemorrhage, Airway, Respiration, Circulation, Hypothermia. Learn the sequence in our complete MARCH guide.

SPECS & MEASUREMENTS

Specifications coming soon. Contact us for detailed product information.

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FREQUENTLY ASKED QUESTIONS

What is the Bolin Chest Seal used for?

The Bolin™ Chest Seal (BCS) is a sterile, vented occlusive chest wound dressing for treating open pneumothorax (sucking chest wounds) and managing tension pneumothorax resulting from penetrating chest trauma — including gunshots, stab wounds, and other penetrating injuries. It seals the chest wall defect to prevent atmospheric air from entering the pleural space, while the three one-way valves allow pressurized air and blood to vent outward, preventing the seal from causing or worsening tension pneumothorax.

How does the Bolin's triple-valve design work?

The Bolin features three patented one-way flap valves (US Patent No. 7,834,231) arranged in a straight line on the polyurethane disc. Each valve opens under slight positive pressure to allow air and blood to escape from the pleural space, then closes to prevent air from re-entering during inspiration. The triple-valve configuration provides redundant venting pathways — if one valve becomes occluded by blood or debris, the other two continue to function. This design allows simultaneous drainage of both air and blood, which single-valve designs cannot reliably accomplish when hemothorax is present.

Will the Bolin Chest Seal adhere over hair and blood?

Yes. The Bolin uses a thick jell-based hydrogel adhesive that is specifically formulated to seal over hair, blood, and moisture. In field conditions, complete wound prep is often not feasible — the hydrogel provides sufficient adhesive force for effective sealing without requiring a shaved or perfectly clean application surface. The adhesive is also flexible enough to be removed and reapplied if the seal needs to be repositioned or the wound reassessed, without requiring a replacement seal.

Why is the Bolin chest seal considered improved over earlier designs?

The current Bolin design incorporates several user-feedback-driven improvements: (1) an enlarged pull tab for easier single-handed removal from packaging in gloves; (2) a dry exterior edge to prevent the adhesive from sticking to packaging or the provider's gloves during deployment; (3) upgraded hydrogel formulation for stronger adhesion in wet environments; (4) valve repositioning to a straight-line configuration that allows easier folding for kit storage; and (5) foam valve stabilizers that lock the valves in position and reduce the risk of air bypassing them.

Is the Bolin Chest Seal CoTCCC-recommended?

The TCCC guidelines recommend treatment of open chest wounds with a vented chest seal — specifying that a vented (not non-vented/occlusive) dressing should be used to prevent tension pneumothorax. The Bolin Chest Seal meets this specification as a vented, occlusive dressing with a proven triple one-way valve design. While the CoTCCC does not designate specific commercial chest seal brands in the way it does specific needle gauge/length for NDC, the Bolin's design characteristics are consistent with CoTCCC-recommended management of penetrating chest wounds.

Why does the Bolin have three valves instead of one?

The triple-valve design provides redundant venting pathways. If one valve becomes occluded by blood, clot, or debris — which is a documented failure mode in single-valve chest seals — the other two valves continue functioning. This redundancy substantially reduces the risk of re-accumulating tension physiology under the seal during patient transport, which is the most dangerous complication of single-valve occlusion.

How do I apply the Bolin Chest Seal correctly?

Expose the wound and wipe the area with the enclosed cotton wipe to remove excess blood and debris. Open the packaging and position the seal over the center of the wound with the valves facing up. Remove the adhesive liner and apply the seal to the wound, firmly adhering all edges with no air bubbles — incomplete edge adhesion allows atmospheric air to bypass the seal. The kit includes a cotton wipe for wound prep. Training on actual application technique under stress is strongly recommended.

Can the Bolin Chest Seal be removed and reapplied?

Yes. The thick jell-based hydrogel adhesive is designed to be removable and reapplicable, allowing the seal to be lifted for wound reassessment or repositioning if initial placement is suboptimal. This is a clinically relevant feature in prolonged field care scenarios where wound condition may change and reassessment is required. Reapplication should be done with care to maintain perimeter adhesion integrity.

What is the difference between the Bolin and the Sentinel Chest Seal?

Both are vented chest seals from Safeguard Medical. The Bolin features a patented triple one-way valve system on a rugged 6-inch polyurethane disc with hydrogel adhesive. The Sentinel features a vented channel design with a 360-degree acrylate adhesive disc. The key clinical distinction is that the Bolin's three independent valves provide redundant drainage pathways, while the Sentinel's acrylate adhesive offers superior all-environment adhesion. Choice depends on operational context and user preference for valve architecture versus adhesive system.

Bolin™ Chest Seal — Triple Valve, 6 in.

At a glance

10 things to know about the Bolin Chest Seal

Three one-way valves in a row

A 6-inch disc that will not wrinkle

Hydrogel that lifts and reseats

A gauze pad in the pouch

It out-stuck the Asherman on bloody skin

In swine, it held off tension where an unvented seal did not

It struggled when the chest kept bleeding

Its adhesion dropped after extreme storage

Stocked under NSN 6510-01-549-0939

Not evidence-based standard — and neither is any chest seal

How to apply the Bolin Chest Seal

Where it fits

The evidence

How it compares

Build the system

Questions buyers ask