ArbomastBR - Permanently Pliable Butyl Rubber Sealant for Curtain Wall and Ductwork
Arbomast BR is a one-part butyl rubber sealant that forms a surface skin but remains permanently pliable and non-setting in the bulk of the material. Designed for metal-to-metal closed joints in curtain wall and window assemblies, metal lap and fixing joints, bedding applications, and HVAC ductwork joints, it provides airtight and watertight sealing with a 20+ year service life.
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Specify Arbomast BR
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Unique properties of Arbomast BR
Arbomast BR remains permanently pliable throughout its service life, accommodating movement in metal-to-metal joints, bedding applications, and ductwork without loss of sealing performance.
Non-setting butyl rubber — permanently pliable bulk material ensures long-term joint accommodation
Watertight and airtight seal — specified for curtain wall and window assembly metal joints
Excellent adhesion to aluminium, steel, and coated metal substrates
Suitable for HVAC ductwork joints — maintains seal under thermal cycling
Applied with ARBO Caulking Gun in standard polyethylene cartridges
20+ year service life in sheltered applications
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Main Applications
Arbomast BR is the specified choice for metal-to-metal joints in curtain walls, window assemblies, bedding joints, and HVAC ductwork.
Curtain Wall Assemblies
Metal-to-metal joints in curtain wall systems requiring watertight and airtight sealing.
Window Assemblies
Metal lap joints and fixing joints in window assemblies and metal frame constructions.
Bedding & Concealed Joints
Bedding joints in timber, concrete, and metal assemblies where a concealed, permanently pliable seal is required.
HVAC Ductwork
Sealing heating, ventilation, and air conditioning ductwork joints subject to thermal cycling.
Technical Specifications & Downloads
| Describtion | Performance |
|---|---|
| Skin Time at 20º C/65 % RH: | 24 hours |
| Application temperature: | + 5˚C to + 40˚C |
| Service temperature: | - 40°C to + 90°C |
| Chemical Resistance: | Minimal but unchanged by exposure to acid or alkali substrates. |
| UV resistance: | Not suited to applications exposed to direct sunlight. |
| Service Life: | 20 years + (service life will be reduced if exposed to direct sunlight). |
| Colours: | Grey |
Associated Products
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Frequently Asked Questions
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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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