Selleys MarineFlex Black 410g
Selleys MarineFlex 410g high-performance adhesive sealant cartridge. Waterproof for boats, pools & spas, even underwater. Sil-X technology.
Man applies Selleys MarineFlex 410g sealant to a boat hull with a caulking gun for waterproof repairs and bonding in marine environments.
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    Selleys MarineFlex Black 410g
    Selleys MarineFlex 410g high-performance adhesive sealant cartridge. Waterproof for boats, pools & spas, even underwater. Sil-X technology.
    Man applies Selleys MarineFlex 410g sealant to a boat hull with a caulking gun for waterproof repairs and bonding in marine environments.

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    Customer Service: 1800 33 88 88

    Email: [email protected]

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    Free Shipping: Complimentary shipping on orders over $200.

    Estimated Delivery Times
    • Sydney/Metro: 2-4 working days.
    • Non-Metro Areas: 5-7 working days.
    • Western Australia: Up to 10 working days.
    Delivery Conditions
    • We ship to PO Boxes & Parcel Lockers.
    • Safe drop enabled unless specified.
    Shipping Methods
    • Standard: Australia Post, Aramex, or Toll.
    • Premium: Urgent dispatch. Orders before 12pm ship same day.

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    Selleys MarineFlex – 410g

    2 reviews

    Price range: $22.90 through $23.50

    SKU: N/A

    SKU:

    Features:

    • Above and below the waterline
    • No primer required
    • Shock absorbing & vibration dampening
    • Powered by Sil-X advanced polymer technology
    • 10-year watertight seal guarantee above the waterline
    • Available in 2 colours:
      • Black
      • White
    Quantity:
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      Description

      Selleys MarineFlex - 410g

      Selleys MarineFlex – 410g delivers a tough, waterproof seal and bond for boats, pools, and spas—even underwater, with no draining required. Powered by Sil-X advanced polymer technology, it outperforms traditional polyurethanes with superior UV resistance and durability.

      Key benefits include:

      • Applies and cures above or below the waterline in salt, fresh, or chlorinated water—no primer needed.
      • Absorbs shock and vibration for lasting flexibility.
      • Solvent- and isocyanate-free, sandable when cured.

      Bonds metals, glass, fibreglass, gelcoat, and more for reliable results.

      Key Features

      • Applies and cures underwater: Fix boats, pools, or spas without draining – perfect for quick repairs above or below the waterline.
      • 10-year watertight seal guarantee: Above-waterline bonds last with superior UV resistance over traditional polyurethanes.
      • No primer needed: Bonds easily to metals, fibreglass, glass, and more for hassle-free use.
      • Shock absorbing & flexible: Dampens vibrations for durable seals that handle movement.

      How to Use

      • Clean surfaces, removing oil, grease or loose particles; works on damp/wet substrates, but seal porous timber or concrete first.
      • Lightly sand gelcoat, plastics or metals, and wipe with mineral turps if needed.
      • Apply Selleys MarineFlex – 410g using a caulking gun, pushing into joints or gaps.
      • Smooth with a soapy spatula within 15 minutes before skinning.

      Guides

      Safety Data Sheet
      Technical Data Sheet

      Specifications

      Product Selleys MarineFlex – 410g
      Brand Selleys
      Weight 0.41 kg (410g cartridge)
      Dimensions 230mm H x 50mm W x 50mm D
      Colours Black, White
      Technology Sil-X advanced polymer
      Key Features Above/below waterline, no primer, shock/vibration absorbing, solvent & isocyanate-free, sandable when cured, 10-year watertight guarantee (above waterline)
      Suitable Substrates Metals, glass, ceramics, sealed timber/concrete, fibreglass, gelcoat, most plastics
      Applications Boats, pools, spas (salt/fresh/chlorinated water)

      view our full range of Sealants & Adhesives

      Additional information
      WeightN/A
      Sealants and AdhesivesAdhesives, Sealants
      ColourBlack, White
      Q & A

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      Reviews (2)

      2 reviews for Selleys MarineFlex – 410g

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      1. Nadine
        Verified owner

        Couldn’t find this in any shops so very pleased to see you had it thanks great service again

        (0) (0)
      2. Warren M.
        Verified owner

        great service kept me informed when my order was split due to damaged stock, highly recommend the company for all the right reasons.

        (0) (0)
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