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    ​MasterSeal 931 - Flexible butyl rubber tape with a non-woven backing

    What is ​MasterSeal 931?

    MasterSeal 931 is a cold adhesive tape composed of a layer of viscoelastic butyl and a non-woven backing. The non-woven material enables the product to distort in both transverse and longitudinal directions. An “easy peel” release paper protects the adhesive side. The non-woven allows a good cementability with common tile adhesives or sealants, structure embossing.

    What is ​MasterSeal 931 used for?

    • Repairing cracked concrete
    • Sealing of damp proof rooms
    • Sealing of elements in metal construction
    • Sealing connections & overlaps
    • Sealing of roof caps
    • Sealing tape for internal and external application​

    What are the benefits of ​MasterSeal 931​​?

    • Excellent elongation
    • Accommodates long term movements
    • A degree of memory
    • Easy, fast and economical to use
    • Permanently flexible
    • Can be painted and plastered over
    • Versatile – suitable on concrete, plaster, timber, plywood, fibre cement sheet, block work, most metal surfaces
    • UV stable


    MasterSeal 931_MS

    pdf (104.94 Kb)

    MasterSeal 931_TDS

    pdf (386.99 Kb)


    UAE: +971/48090800
    Oman: +968/24435800
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