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FILL AND SEAL WOOD JOINTS AND GAPS – Seal joints, cracks and gaps in wooden flooring, skirting boards and joinery with Osmo Gap Sealer. This flexible acrylic sealant helps create a smooth, clean finish before applying Osmo wood finishes FLEXIBLE SEAL THAT MOVES WITH WOOD – The durable acrylic formula remains elastic after curing, helping accommodate natural movement in timber while maintaining a strong, long-lasting seal COMPATIBLE WITH OSMO WOOD FINISHES – The only sealant designed to work seamlessly with Osmo wood finishes. Once dry, it can be treated with Osmo oils and coatings to achieve a consistent finish across the surface EASY TO USE – Apply this flexible wood filler directly into joints and smooth with a wet tool or finger. Depending on bead thickness, the sealant can be treated with Osmo finishes after around 1 hour and sanded once fully cured (approx. 24 hours) OSMO: GOOD FOR WOOD – With over 140 years of wood expertise, Osmo oils, wood finishes and wood care products are designed to work together to help apply, protect and maintain timber surfaces while preserving their natural beauty