Home > Companies > Lorient Polyproducts Ltd > LAS8004 si Drop Seal

A heavy duty, mortised, automatic ‘flat back’ drop seal to suit installation to metal door rails. It features a high efficiency mechanism, which lifts the seal clear of the floor as soon as the door is opened by a few millimetres; resulting in lower door operating forces.

Key benefits:

  • Requires no power connection.
  • Self-levelling on uneven floors, seal height can be adjusted independently of fixing screws.
  • Tested for reliability, the seal completed 1 000 000 cycles without failure.

Standard product features


Grey silicone rubber.


Silver anodized aluminium.


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

Use with:

Any threshold plate.


27.5 mm high x 38 mm wide.

Minimum/ maximum gap size:

1 mm/ 13 mm.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-75-40/430 Door and window weatherstrips and seals

Product specification

An important note about specifying



Lorient Polyproducts Ltd


+44 (0)1626 834252

Product reference

LAS8004 si Drop Seal


[635 mm]
[735 mm]
[835 mm]
[935 mm]
[1035 mm]
[1135 mm]
[1235 mm]

Manufacturer details

Endeavour House,
Fairfax Road,
Heathfield Industrial Estate,
Newton Abbot,
Devon, TQ12 6UD
Tel +44 (0)1626 834252
Fax +44 (0)1626 833166
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