PBSCs Inflatable Seal Doors HC-ISD

PBSC’s inflatable seal doors provide the highest possible airtight containment in applications involving high traffic and wheeled equipment. The doorframe is flush with the floor eliminating any trip hazard or trolley interference.

The seal around the perimeter of the door is inflated by compressed air against a radiused doorframe and provides excellent leakage resistance up to pressure differences of 2000Pa (8” w.g.).

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The door leaf is available in polished stainless steel, powder-coated low-carbon steel, aluminium, or solid core phenolic resin construction.

Provided with the option to use PBSC’s control system, which integrates with the building access control system. Allowing proven software at FAT, reducing site time and risk.


  • 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 e.g. cast concrete, block, stud and partition systems.


  • Interlock systems
  • Frame designs to seal to almost all wall types
  • Frame design with no visible fixings to the wall
  • Double seals
  • UPS to PLCs
  • 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

For more information please contact us

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