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Arbokol AG2 Gun Grade - Two-Part Polysulphide for Structural and Civil Joints

ARBOSEAL Pro® Arbokol AG2 Gun Grade is a two-part thixotropic polysulphide sealant that cures to a flexible rubber seal suitable for both horizontal and vertical joint applications. Designed for structural floor joints, parapet wall joints, concrete roadways and pavements, sea walls, and water-retaining structures, it delivers 30% butt joint movement accommodation and a 20+ year service life.

Specify Arbokol AG2 Gun Grade

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Unique properties of Arbokol AG2 Gun Grade

Arbokol AG2 Gun Grade handles both horizontal and vertical joints in the most demanding civil, infrastructure, and water-retaining environments.

  • Thixotropic gun grade — suitable for both horizontal and vertical joint applications

  • Flexible rubber seal — 30% movement accommodation for thermally active structural joints

  • Chemical resistance to petrol, diesel, jet fuel, and common solvents

  • Good adhesion to concrete, stone, and metals — suitable for sea walls and water-retaining structures

  • Long-term flexibility and chemical resistance for the most demanding civil engineering joints

  • 20+ year service life — meets BS EN ISO 11600 F 25 LM and BS 4254:1983

Technical Specifications & Downloads

DescribtionPerformance
Work Life at 20°C1.5 - 2 hours (other times may be possible – please consult Adshead Ratcliffe for further information)
Application Temperature +5˚C to + 40˚C
Service Temperature-40°C to + 80°C
Typical Shore Hardness:25-30
Cure Rate at 20˚C/65 % RH:3 days at 20°C in a typical joint. At lower temperatures cure rate will be slower.
Chemical Resistance:Resistant to most dilute acids and alkalis, petrol, diesel, jet fuel and many solvents and vegetable oils
Service Life:20 years+ (when used in trafficked areas or other special environments, service life may be reduced).
UV Resistance:Good
Movement Accommodation:Butt joints (movement in tension and compression): 30%
Lap joints (movement in shear): 50%
Colours:Grey

Associated Products

Arbokol AG2 Pouring Grade - ARBOSEAL Pro®

A two-part polysulphide sealant in pouring grade consistency for horizontal joints and road or floor applications.

Arbokol 2150 - ARBOSEAL Pro®

A two-part polysulphide sealant for use in expansion joints in concrete, masonry and flooring.

Arbothane 1245SL - ARBOSEAL Pro®

A one-part polyurethane sealant with self-levelling properties for horizontal movement joints.

AG2 Porous Primer

A one-part solvent-based primer for porous surfaces such as concrete, for use with Arbokol AG2 and Arbokol 2150 polysulphide sealants.

ARBO® Cleaner 17

Xylene-based cleaner for the effective cleaning and degreasing of construction substrates prior to sealant application.

Frequently Asked Questions

1

Why choose ARBOSEAL Pro® Arbokol AG2 Gun Grade for structural and civil engineering joints?
Arbokol AG2 Gun Grade is thixotropic — it does not slump or flow after application — making it the correct choice for both horizontal floor joints and vertical applications such as parapet walls and sea walls, where a pouring grade would not remain in position. Its polysulphide chemistry provides the same proven resistance to petrol, diesel, and common chemicals as the Pouring Grade, with a higher Shore D hardness of 25–30 for joints subject to greater mechanical stress.

2

What are the key benefits of ARBOSEAL Pro® Arbokol AG2 Gun Grade?
Arbokol AG2 Gun Grade provides 30% butt joint movement accommodation with a 20+ year service life, compliant with BS EN ISO 11600 F 25 LM and BS 4254:1983. Its thixotropic behaviour allows it to be applied in vertical and horizontal joints with equal efficiency, making it versatile across a wide range of civil and structural applications. Supplied as a 2.5 litre two-part pack applied via ARBO® Barrel Guns, it is well suited to large-scale jointing programmes.

3

What is the ARBOSEAL Pro® range?
The ARBOSEAL Pro® range is a comprehensive portfolio of professional-grade sealants manufactured by Adshead Ratcliffe under the ARBO® brand. The range covers silicone, modified polymer, polyurethane, polysulphide, epoxy, acrylic, butyl, and oil-based sealant technologies, providing a complete solution for sealing, bonding, and jointing across all types of construction projects — from glazing and cladding to flooring, facades, and secure environments.
 

4

Which ARBOSEAL Pro® sealant is right for my application?
Product selection depends on the substrate type, joint movement, environmental exposure, and performance requirements. Neutral cure silicones (e.g. Arbosil LMS, Arbosil 1096 S) suit glazing and perimeter sealing. High-modulus options (e.g. Arbomeric MP20) handle structural joints. Polysulphides (e.g. Arbokol AG2, Arbokol 2150) provide chemical resistance for floors, roofs, and water-retaining structures. Epoxy sealants (e.g. Arbokol SECURE, Arbokol 1025 SP) deliver hard-wearing seals for secure environments and pool applications. Contact ARBO® Technical Services for specific guidance.
 

5

What surface preparation is required before applying an ARBOSEAL Pro® sealant?
All joint faces must be clean, dry, and free from dust, oil, grease, loose material, and previous sealant residues. For porous substrates such as concrete and brickwork, the application of an ARBO® primer is recommended to maximise adhesion. Always consult the product-specific Technical Data Sheet (TDS) for primer and cleaner recommendations. Application should be carried out in accordance with BS 8000-16:1997 + A1:2010.
 
 

6

Where can I find technical documentation for ARBOSEAL Pro® products?
Technical Data Sheets (TDS), Safety Data Sheets (SDS), and Declarations of Performance (DoP) for all ARBOSEAL Pro® products are available for download on each individual product page at arbo.co.uk. The full ARBO® Product Catalogue is also available for download. For further technical support or specification advice, contact ARBO® Technical Services directly.

Explore the ARBO® Product Family

Sealants

Sealants for reliable movement joint, perimeter and weatherproof sealing in a wide range of applications.

Weather Protection

Effective weather sealing solutions for interface applications, penetration sealing and structural joints.

Adhesives

Bonding solutions for secure and durable adhesion across façade and construction substrates.

Accessories

Caulking Guns, Nozzles, Knives, Scrapers, G Clamps etc.

Find your contacts

Regardless of whether you are an architect and planner, property developer, industry specialist, distributor, applicator or specifier – if you have any questions about our products, services or specific construction projects, please feel free to contact the CARLISLE® contact person in your area with your technical questions. Our experts will be happy to advise you.

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Main Applications

Arbokol AG2 Gun Grade is the specified choice for structural floor joints, parapet walls, concrete roadways, sea walls, and water-retaining structures.

Structural Floor & Wall Joints

Sealing structural floor joints and parapet wall joints in civil and commercial construction.

Concrete Road & Pavement Joints

Sealing vertical and horizontal joints in concrete roadways and external paved areas.

Sea Walls & Marine Structures

Sealing joints in concrete sea walls and marine structures subject to water immersion and salt exposure.

Water-Retaining Structures

Joints in water-retaining (non-drinking water) structures requiring long-term chemical resistance.

ARBOKol AG2 Pouring Grade - ARBOSeal Pro®
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ARBOKol 2150 - ARBOSeal Pro®
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ARBOThane 1245SL - ARBOSeal Pro®
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ARBO AG2 Porous Primer
Read more
ARBO Cleaner 17
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ARBOSEAL Pro Range
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Arbobond Pro
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