This air-seal door is also known as a hospital door, laboratory door, and cleanroom door. It is ideal for use in hospitals, laboratories, and cleanrooms. With a flush door frame that eliminates any obstacles or tripping hazards, providing unparalleled airtight containment.

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Innovation. Design. Quality.

The door leaf and architrave are made of 304 or 316 stainless steel and incorporate the inflatable seal. The standard seal is silicone, but EPDM is available upon request.

Architrave and door leaf are supplied in a polished finish as standard to <0.6Ra, but finer finishes are available upon request.

Hinge sets are provided in cast stainless steel material and come with a satin finish.

The window is available:

*  6mm thick round toughened clear glass double-glazed vision panel

*  6mm thick square toughened clear glass double-glazed vision panel

*  6mm thick radius toughened clear glass vision panel

Additionally, a privacy cover is available and added to one side of the door leaf only.

PBSC’s inflatable seal door set is designed to provide a strong barrier against leakage resistance for pressure differences up to 2000Pa (8″ w.g.).

Compressed air inflates the seal and is securely fit to the curved doorframe. This feature enables the use of reliable software during the FAT, which reduces on-site time and risk.

The door is designed with PBSC’s unique cast stainless-steel hinge assembly and includes a strong tempered or laminated glass flush-glazed vision panel that fits seamlessly within the stainless-steel door frame.

The inflatable seal is created by joining a hollow extruded profile to form an airtight seal that can be inflated to seal two surfaces. Providing a clean, time-saving sealing solution to hermetic sealing against powders, gases, liquids, and dust.

Following on-site installation, PBSC offers a Planned Preventative Maintenance and Servicing Plan with an extensive after-sales support service, including planned preventative maintenance programs, servicing, and spare parts.



  • Monitoring of seal pressure
  • Monitoring of supply pressure from building
  • Unique PBSC cast stainless-steel hinge assembly
  • Stand-alone PLC controls available
  • Door leaf construction options
  • High leakage resistance across the complete door set
  • Designed to install into a range of wall types
  • Silicone or EPDM inflatable seal
  • Hydraulic or Automatic Door Closers
  • Flush glazed vision panels – toughened or laminated glass
  • Configurable button sets and LED indicators


A practical and functional solutions without the need for a floor threshold…

PBSC’s Inflatable seal APR door provides the highest possible airtight containment in applications involving high traffic and wheeled equipment, primarily used within high containment applications where airtight containment is required, including BSL3 and BSL4 labs.

PBSC's Inflatable Seal Door is also called a High Containment Door, Hospital Door, Lab Door, Laboratory Door, Stainless Steel Door, APR Door, Airtight Door, Air Tight Door, BSL Door, High Containment Door, Pharmaceutical door, and Clean Room Door.

Technical Specification

  • Leakage resistance up to pressure differences of 2000Pa (8” w.g.)
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  • Please contact PBSC for specific design options.
  • PBSC reserves the right to introduce changes in performance, configuration and technology, dimension, weights, and materials in the course of technical progress. Images may not be accurate.
  • Some of the information/images/equipment described or shown may only be available at extra cost. Features & specifications will vary.


  • Interlock systems
  • Frame designs to seal to almost all wall types
  • Frame design with no visible fixings to the wall
  • Double seals
  • UPS to PLC’s
  • Power Loss Upgrade System, to keep the compressed air supply to the seal in power failure
  • Low level sampling port
  • Pneumatic Override Button to release the seal in the event of power failure
  • Vision panel cover
  • Automatic Closer
  • Large door designs up to 13.1ft H and 8.2ft W