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.
%3Aformat(webp)%3Aquality(75)&w=3840&q=75)
Specify Arbomast BR
Add products straight to your project specification or download product info and save for later.
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
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
Frequently Asked Questions
Explore the ARBO® Product Family
%3Aquality(75)&w=384&q=75){kind=logo}
Sealants
Sealants for reliable movement joint, perimeter and weatherproof sealing in a wide range of applications.
%3Aquality(75)&w=384&q=75){kind=logo}
Weather Protection
Effective weather sealing solutions for interface applications, penetration sealing and structural joints.
%3Aquality(75)&w=384&q=75){kind=logo}
Adhesives
Bonding solutions for secure and durable adhesion across façade and construction substrates.
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.
Here's how to do it: Simply enter your postcode in the search field of the map
%3Aquality(75)&w=3840&q=75)
%3Aquality(75)&w=3840&q=75)
%3Aquality(75)&w=3840&q=75)
%3Aquality(75)&w=3840&q=75)
%3Aquality(75)&w=3840&q=75)
%3Aquality(75)&w=3840&q=75)
%3Aquality(75)&w=3840&q=75)
%3Aquality(75)&w=3840&q=75)
%3Aquality(75)&w=3840&q=75)
%3Aquality(75)&w=3840&q=75)
%3Aquality(75)%3Afocal()&w=3840&q=75)