Arbokol AG1


A one-part polysulphide sealant suitable for perimeter sealing of timber windows.

Relatively slow initial cure means that this sealant is not recommended for joints wider than 25 mm, or for use in public areas/ schools, or areas liable to vandalism.

Resistant to most alkalis and dilute acids, petrol, diesel, jet fuel, and many solvents and vegetable oils. It should not cause migratory staining on concrete or masonry.

Very good UV resistance.

Burns, but will not readily ignite, so does not constitute a fire hazard.

Can be painted, but excessive movement may cause the paint to crack and induce tears in the sealant.

Correctly applied, the sealant should not require maintenance, and has an anticipated life in excess of 20 years.


  • BS EN ISO 11600 F-20HM.

Health and safety:

Avoid prolonged skin contact. Use of this product should be recorded in the project Health and Safety Plan.

Application temperature:

+5°C to +50°C.

Curing time:

14–28 days, depending on joint configuration and atmospheric conditions.

Joint dimensions:

– Width:

  • Minimum 6 mm; maximum 25 mm (single application).

– Depth:

  • Porous substrates: Minimum 10 mm, maximum 25 mm.
  • Non-porous substrates: Minimum 6 mm; maximum 25 mm.

Joint backing:

A combined joint filler/ bond breaker, such as closed cell foam polyethylene rod, should always be used to ensure that the sealant adheres only to the joint faces and not to the back. Bond breaker tape should be used where the joint has been packed out with fibre-board.


Use Arbo Primer 925 for brickwork, concrete and stained timber. Primers are available to suit other substrates – refer to technical literature for details.

General information

Uniclass 2015

Pr_30_31_76_63 Polysulfide glazing compounds and sealantsPrimary


F30/610 Movement joints with sealant

F30/670 Head of non-loadbearing walls

L10/75 Sealant joints

L10/810 Sealant joints

L20/80 Sealant joints

L20/820 Sealant joints

Q10/650 Sealant movement joints

Product range

Polysulphide Sealants

Specification data - Polysulfide glazing compounds and sealants

Product Reference

Arbokol AG1






Rustic Red





Joint backing: Closed cell foam polyethylene rod

Fibre-board with bond breaker tape

Primer: Arbo Primer 925

Product Options


7 colours available.

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