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Newton 308 Stopaq

Single-component, highly flexible compound used for sealing conduits and pipes through service duct sleeves. An incredibly effective pipe sealant, the compound seals around numerous services within the sleeve, even where significant water ingress exists.

The unique pipe sealant compound never cures, remaining permanently flexible, allowing for new services to be simply pushed through the existing repair and resealed.

Newton 308 Stopaq swells by up to 10% when in contact with water and will seal the service duct against water pressure of up to 3m of water pressure and will form a very effective seal against gas and water vapour.

Newton 308 Stopaq adheres to both wet and dry surfaces of concrete, mortar and plastic without the need of a primer. The swelling characteristics do not create any stresses to the service joint or the structure.

Once the service sleeve is sealed, Newton Stopaq FR Mortar is used to cap the installation. Stopaq FR Mortar is a fibre reinforced non-shrinking fire resistant mortar specially produced for use with Newton 308 Stopaq that can receive new cables or conduits without the use of power tools.

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

    Key Benefits

    • Fast and easy to apply.
    • The sealing remains permanently flexible.
    • Does not demand special tools for application.
    • No material waste – paste re-usable.
    • Immediate sealing: no curing time needed.
    • Provides permanent and optimal sealing of the service duct.
    • No fumes, no chemical reactions.
    • Adjusts to movements of pipes and cables.
    • Allows adding and removing of conduits at any time.

    Typical Applications

    Typical Applications

    • Wall inlets below ground water level – Newton 308 Stopaq is suited for sealing against ground and surface water intrusion around pipes and cables, leading through building wall penetrations into basements and other earth retained structures.
    • Sealing of running water leaks – For permanent stopping of ground or surface water leaks through cable and pipe wall penetrations.
    • Wall penetrations inside buildings – Permanent sealing and protection of wall penetrations against gas, fire or flooding is obtained with Newton 308 Stopaq together with the Stopaq FR mortar on either side of the wall.
    • Multi pipe & cable inlets – Newton 308 Stopaq sealing compound is excellent for hermetic sealing of multipurpose, horizontal lead-through wall inlets, where several pipes and cables are coming through one opening.

    Technical Data

    Technical Data

    Features Result
    Material Synthetic Polyolefin Compound
    Colour Green
    Specific Gravity 1.2 to 1.5
    Pack size – Cartridge 0.4 Litres
    Pot life None
    Shelf life None
    Moisture Absorption (ASTM D570) 5 – 20%
    Gap filling 10 to 40mm
    Flash Point 170
    Installation Temperature 5ºC to 35ºC
    Service Temperature -20ºC to +35ºC

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