Acoustic, smoke & fire containment systems

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LAS8012 si drop seal

A heavy duty automatic drop seal designed for optimum performance. It is spring-loaded to lift clear of the floor as soon as the door is opened by a few millimetres. Supplied with standard nylon end caps. New die cast end plates are also available in a metallic finish where premium aesthetics are required.

Key benefits

  • It requires no power connection.
  • Based on comparative laboratory tests to
  • BS EN ISO 10140-1:2010+A2:2014 Annex J with ratings up to 43dB Rs,w.
  • Tested for reliability, the seal completed 1,000,000 cycles without failure.


  • Single swing doors.
  • For use on both right and left handed doors.

Use with

  • Any threshold plate.


  • Silver anodised aluminium, grey silicone rubber gasket, grey end caps.
  • Silver anodised aluminium, black silicone rubber gasket, black end caps.
  • Die cast end plates in square and radiused versions are also available in a metallic finish.
  • The non-button end is designed blank, creating an engineered smooth aesthetic.