Household Adhesives

Knead It Underwater 50g

Selleys Knead It Underwater is a versatile hand kneadable, fast setting epoxy repair system that can be used for repairing a multitude of things. It is especially suitable for application to damp, wet or underwater substrates.
RM 19.80
Availability: In stock
Knead It Underwater


  • Easy to use – no mess.
  • Can be drilled, sawed, sanded, filed, tapped, machined or painted one hour after mixing.
  • Good adhesive strength.
  • Can be used to reshape, rebuild and repair a multitude of surfaces and applications.
  • Good gap filling properties.
  • Long-lasting, durable solution.
  • Heat resistant to 120°C continuously or 140°C intermittently.
  • Can be used under fresh or salt water.
  • Longer set time (less than 20 min).
  • Higher tack for underwater repairs.

Product Specs

Size 50g
Colour Green (hardener) and White (Resin), final mixture is off-white
Technology Epoxy Putty
Use Exterior, Interior

where can this product be used?

  • Creating water features/ attaching pebbles under water in a pond
  • Sealing holes in foundations and outer walls
  • Repairing generators, water and fuel pumps
  • Re-setting ceramic tiles in swimming pools
  • For fast and permanent repairs to damp and wet substrates, and even for underwater repairs
  • Patching dings, scratches, cuts, gouges and holes in fiberglass, metal and wooden boat decks and hulls
  • Repair of pipes, fittings, electrical connections, water tanks, tubs, sinks, spas, hot tubs, tanks, pools, leaking gaskets
  • Forming custom gaskets
  • Ideal for emergency in-water repairs
  • Repairing fish tanks, ponds, pools

What materials is this product suitable for?

  • Glass
  • Ceramics
  • Masonry
  • Metal
  • Timber
  • Fibreglass
  • Some plastics

how to use

  • Clean surface free of grease, dirt and dust. For best results, roughen bond area prior to cleaning.
  • Cut off required amount. Replace disc on remaining portion. To mix, knead with fingers to uniform colour. If mixing is difficult, warm to room temperature. Wear gloves to avoid messing hands.
  • Apply to surface to be repaired (within 12 minutes of mixing) and work the material forcefully into the surface applying pressure until adhesion begins to take effect. Mould to shape if required. If material sticks to fingers, use the plastic wrapper to press the material in place.
  • For a smooth appearance, remove excess and hand rub with water or a damp cloth before hardening begins.
  • After 20-30 minutes, Knead It Underwater will harden and begin to form a strong bond. Allow for longer cure times at lower temperatures.
  • After 60 minutes, Knead It Underwater may be drilled, sanded, machined, filed, sawed or painted.
  • Wash hands thoroughly with soap and water after use.


  • Does not adhere to polyethylene, polypropylene or Teflon (polytetrafluoroethylene).
  • Set time increases at temperatures below 20°C.
  • Not recommended for filling joints/cracks subject to movement as the cured product is extremely hard and inflexible.
  • Do not use Knead It Underwater for applications in contact with drinking water.