Description
Soudal LMN Black Silicone Sealant 300ml
Soudal LMN Black is a professional neutral cure silicone sealant for glazing, frames, joints, and exterior sealing. It gives a neat black finish and stays permanently flexible after curing. Soudal describes Silirub LMN as a superior quality low modulus neutral cure silicone with primerless adhesion on common construction materials, high movement capability, and resistance to UV, rain, snow, and temperature extremes.
Key Features
This sealant offers low modulus performance for moving joints and perimeter seals. It tools well, skins quickly, and suits common building surfaces including glass, plastics, masonry, metals, and wood. The latest UK technical data sheet lists skin formation at about 7 minutes, cure speed at about 2 mm per 24 hours, and movement capability of ±25%.
Applications
Use this silicone for window frames, door frames, glazing joints, perimeter sealing, façade work, roofline details, and general construction sealing. It is a good option where you need a black seal around darker trims, black frames, or visible external joints. As a result, it works well for both new installations and repair jobs. Retail listings for code 122401 also describe it as the black 300ml version of Soudal’s neutral cure building silicone.
Colour Match
The Black finish suits modern black window frames, trims, cladding details, and visible joint lines where white or clear sealant would stand out too much. In many cases, it gives a neater and more professional finish around perimeter edges and external details.
Pack Size Options
This product is supplied in a 300ml cartridge and can be sold as 1 tube or box quantity depending on how you want to structure the listing. Apply it to clean, dry, dust-free surfaces with a standard sealant gun. Smooth the bead before skinning begins, and test first on unfamiliar surfaces.
Browse our full range of silicone and sealants. For full technical information, view the Soudal Silirub LMN technical data sheet.








