Automatic Drop Seal by Norsound

  • • 1,000,000 cycle test
  • • BS 476 Part 20/22 Compliant
  • • BS 476 Part 31 Compliant
  • • Certifire Approved CF629
  • • Lightweight operation
  • • Self-levelling
  • • Sound reduction up to 55dBRw
  • • UL Approved
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The next generation of acoustic drop seal

Specifically designed and manufactured by Norsound in Germany, quality and attention to detail have been at the forefront of every design decision.

Some clever design changes to the NOR810® have allowed us to offer our best seal yet.

The robust internal mechanism allows for parallel actuation, whilst a complete overhaul to the seal provides for the most durable sealing profile to date - now even more resistant to seal delamination.

Changes to the actuator allow it to be completely removed from the product when necessary. Not only does this mean that no tools are required in adjusting it, those on site wanting to deactivate the seal when fitting doors can do so very easily. Added to this, the actuator is impregnated with a Teflon material, giving it a smooth surface that eradicates any damage to the frame when the door closes.

The seal comes fully fire tested to comply with British Standard BS476: Part 22 and has a wealth of acoustic data as evidence of its competent sound attenuation properties.

The product is supplied with a pair of brush finished steel end plates.

Length Code
320mm NOR810-320
435mm NOR810-435
535mm NOR810-535
635mm NOR810-635
735mm NOR810-735
835mm NOR810-835
935mm NOR810-935
1035mm NOR810-1035
1135mm NOR810-1135
1235mm NOR810-1235
1335mm NOR810-1335
1435mm NOR810-1435
1535mm NOR810-1535