Concrete Expansion Joint Silicone Sealant for Building Waterproof Sealing. Strong Adhesion: Excellent adhesion for most building materials including windows, signs, doors, and wood. Versatile Application: Suitable for glazing, sealing, and filling joints on windows, signs, doors, and internal fixtures. Neutral Cure Formula: One-part, neutral cure silicone sealant designed for room temperature application. Flexible Customization: Offers customization from samples, minor customization, and flexible customization options. OEM/ODM Service: Provides both OEM and ODM services with 6 R&D engineers supporting new product launches. ISO Certified Quality: Manufacturer holds ISO9001:2015, ISO40001:2018, and ISO14001 certifications. Low MOQ: Accepts minimum order quantity of just 1 PC for flexible purchasing.