LN-W501 is for new and remedial weathersealing applications and excellent for a broad range of substrates with high degrees of expansion and contraction.It is a neutral cure, medium modulus, matte-finish silicone used in weatherproofing applications. Feature � 100% Silicone � Non-Staining � Low Dirt Pick-up � Durable- Watertight Seal � Flexible Seal- Will not Crack or Shrink Preparation Clean all joints removing all foreign matter and contaminants such as grease, oil, dust, water, frost, surface dirt, old sealants or glazing compounds and protective coatings. Storage Guaranteed storage time 12 months starting from the date of manufacture if stored in a closed original package in a dry place between +5 °C and +30 °C