PBSC’s APR pneumatic inflatable seal door set, also known as a containment-controlled door, airtight door, airtight containment door, hospital door, laboratory door, and cleanroom door, provides airtight containment for areas with frequent traffic and wheeled equipment, such as hospitals, laboratories, and cleanrooms.

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Compressed air is operated to inflate the door seal, fitting against the curved door frame, creating a barrier against leakage resistance for pressure differences of up to 2000Pa (8” w.g.). This ensures a secure fit, allowing the use of reliable software during the FAT, and reducing on-site time and risk.

The robust door leaf is available in different materials, including polished stainless steel, powder- coated low-carbon steel, and aluminium.

Featuring PBSC’s unique cast stainless-steel hinge assembly, it includes a toughened or laminated glass flush-glazed vision panel, seamlessly integrated within the lines of the stainless-steel door frame.

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.

Sub-Frame type:
Bolted Sub-Frame (Stud Partition, Block, or Modular Partition Wall) – 5mm zintec steel to be fixed into the wall to form the engineered structural opening. Available with a compression seal to the door frame.

Cast-In Door Frame (Concrete Wal) – The door frame is designed to be fully cast into the wall at the
time of shuttering. The door frame is filled with concrete during the casting process and no site
welding or grout fill is required. The door frame is designed with stops for the performance coating.

Cast Sub-Frame (Concrete Wall) – 5mm stainless steel grade 304 to be cast into the concrete walls to
form the structural opening. Available with a compression seal or welded seal to the door frame. If
welded, please advise if the frame will require grout filling on-site.

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.



  • High leakage resistance across the complete door set
  • 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
  • Silicone or EPDM inflatable seal
  • Hydraulic or Automatic Door Closers
  • Configurable button sets and LED indicators
  • Flush glazed vision panels – toughened or laminated glass
  • Designed to install into a range of wall types


Providing the highest possible airtight containment in applications involving high traffic and wheeled equipment

Providing the highest possible airtight containment in applications involving high traffic and wheeled equipment…

PBSC’s APR airtight containment door is designed to be easily installed into various wall types, including cast concrete, block, stud, and partition systems. It is mainly used in high containment facilities, such as BSL3 and BSL4 labs, where heavy traffic and wheeled equipment are common.

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 4m H and 2.5m W