Seal-it® 125 PLASTER-FILL

Seal-it® 125 PLASTER-FILL is an ultra-lightweight, high-quality ready-mixed repair and filler compound that is based on acrylic emulsion technology and cures by evaporation into a durable filler material.



  • Specially designed as a ready-made, ultra-lightweight filler and repair compound for plasterboard.
  • Filling, smoothing, levelling, sealing and repair of joints, cracks, splits, fissures, dents, holes, grooves and penetrations in walls and ceilings.
  • Also ideally suited for repair of all manner of surface damage on wood, stone, concrete, paint systems, plasterwork, masonry and spray plaster.
  • For best results, apply Seal-it® 125 PLASTER-FILL without pressure.


  • Ultra-lightweight and practically non-shrink, up to a coat thickness of 12 mm.
  • Excellent adhesion to plasterboard, stone, concrete, wood, paint, stucco, masonry and plasterwork.
  • Ready-mixed, superb workability, easy to apply a smooth finish with a moist putty knife.
  • Instantly and permanently paintable with synthetic and water-based paint systems.
  • Excellent sandability, once fully cured.
  • Practically odourless, fast-curing filler based on acrylic sealant emulsion polymer.
  • Non-corrosive to metals.
  • Rapid tack-free time (approx. 5 min.).
  • Tools are easy to clean with water.
  • Versatile, both indoors and out, with 5 hours of dry weather needed after outdoor application.
  • Lasting resistance to discolouration, weather and ageing.

Application conditions

  • Application temperature (ambient and surface) between +5°C and +35°C.
  • On stable, compatible, clean, uncontaminated, grease-free and dust-free surfaces; porous, absorbent/open surfaces do not need to be completely dry.
  • Use a suitable brush to remove any loose particles from the surface.
  • Degrease the surface properly using Seal-it® 510 CLEANER.
  • Use a brush to prime highly porous, absorbent/open surfaces – such as gypsum blocks, sand-lime bricks, stone, aerated and non-aerated concrete and masonry – evenly with 1 part Seal-it® 125 PLASTER-FILL and 2 parts water.
  • Apply a smooth and tight finish using water-moistened/wet putty knife or scraper.

Standard product line


12 x 310ml cartridge

1L bucket

5L bucket



SI-XXX-XXXX-XXX = Article number.
Other colours and/or packaging on request.


  • VOC emission class A+

Technical support department

Connect Products has a state-of-the-art R&D laboratory, where experienced specialists continuously research and develop sealants, adhesives and PU foams. Customers and clients can have products researched, tested and developed by this department. You can also contact us for technical advice, tips, project support, warranty certificates, requests and other technical questions. We will be happy to assist you with high-quality technology.

Call us on +31 (0)183 731 400 or send us an e-mail.

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