Arbomast BR

Mastic Sealants

Arbomast BR is a one part Butyl rubber based sealant for use in closed joint sealing and bedding applications. Arbomast BR exhibits good adhesion to many common construction

Arbomast BR forms a surface skin if exposed to air but the bulk of the material underneath remains non setting and pliable. This product is available in grey which is packed in 380ml cartridges.

Arbomast BR

  • One Part Butyl Based Sealant


  • Sealing between adjacent construction materials where minimal movement is anticipated
  • Metal to metal joints in curtain wall and window assemblies
  • Steel stanchions to concrete
  • Metal lap joints
  • Vehicles
  • Flanges
  • Brickwork
  • Bolts
  • Fittings and marine bedding

Not recommended

  • Use against bituminous materials
  • Movement Joints subject to high degrees of movement
  • Expansion Joints
  • Use Against Natural Stone


  • Grey

Download Arbomast BR literature:

Product Catalogue


Suitable ARBO® accessories:

Arbolite Dual Purpose Putty

Glazing and Bedding Compounds

ARBO® Linseed Oil Putty

Glazing and Bedding Compounds

ARBO® Polymer Putty

Glazing and Bedding Compounds


Glazing and Bedding Compounds