The Russell Chest Seal is a hydrogel-based dressing with a low-profile, four-aperture valve system designed for treating penetrating chest wounds. It creates a one-way seal allowing air to escape the pleural cavity while preventing re-entry, minimising lung collapse and aiding re-inflation. This device features a water-containing gel matrix on non-woven fabric with silicon-coated release liners, ensuring comfortable long-term wear. The seal remains securely adhered for extended periods while allowing wound monitoring, ideal for emergency services, trauma centres, first aid, and military use. Key features Hydrogel matrix base for strong adhesion, even in challenging conditions One-way valve prevents tension pneumothorax Non-woven fabric backing provides durability Silicon-coated release liners for easy emergency application Minimum shelf life of one year.