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Newton 801-M Mastic Sealant

A multipurpose silicone sealant primarily used with the Newton 805 Newlath and 803 Newtonite membranes – applied to the plug before fixing into the membrane, 801-M seals the penetration and prevents bridging between the damp substrate and new internal surface.

Applied to the fixing plugs before they are fitted, Newton 801-M Mastic Sealant serves so as to seal the penetration and stop the occurence of a ‘bridge’ between the damp or stained substrate and the new internal surface. Newton 801-M Mastic Sealant has a high resistance to both ageing and extremes of temperature, as well as achieving a high adhesive strength, without primer, on the majority of materials used in the building and engineering industries..

  • Key Benefits
  • Typical Applications
  • Technical Data
  • Key Benefits

    Key Benefits

    • Prevents efflorescent salts and staining to the finished surface.
    • Seals the fixing plug to the membrane.
    • Obtains a high adhesive strength without a primer.
    • Applicable to most materials used in the building and engineering industries, including, but not limited to laminated and double glass, aluminium, steel, stainless steel, anodised steel, treated wood, and PVC.
    • Also compatible with alkali substrates such as concrete and brick.
    • Applicable in temperatures as high as 150°C and as low as -50°C.
    • High resistance to ageing.
    • Non-toxic.
    • Solvent-free.

    Typical Applications

    Typical Applications

    • To seal fixing plugs to System 800 membranes, including Newton 803, Newton 803 Newtonite, and Newton 805 Newlath.
    • For sealing around service penetrations and protrusions through the substrate/membrane.
    • As a general, high performance and multipurpose sealant in the building industry.

    Technical Data

    Technical Data

    Cured Sealant Result
    Hardness (Shore A) 20
    Elastic recovery > 90%
    Deformation capability 25%
    Modulus at 100% elongation 0.32 N/mm2
    Elongation at break 350%
    VOC < 100 gr/l
    Temperature resistance -50°C to +150°C

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