Glue Devil General Purpose Silicone is a premium, single-component RTV (Room Temperature Vulcanizing) sealant engineered for both interior and exterior use. It cures upon exposure to atmospheric moisture to form a tough, permanently flexible, and waterproof rubber seal that won’t crack, shrink, or become brittle over time.
Key Performance Features
- Permanently Flexible: Maintains a high degree of elasticity to accommodate thermal expansion and structural movement without losing its bond.
- Weather & UV Resistant: Formulated to withstand harsh sunlight, rain, and extreme temperature fluctuations, making it ideal for outdoor applications.
- 100% Waterproof Seal: Creates an impenetrable barrier against water and moisture, protecting joints from leaks and water damage.
- Superior Adhesion: Bonds powerfully to most non-porous surfaces, including glass, ceramics, fiberglass, aluminum, and painted surfaces.
Ideal Applications
- Glazing & Windows: The primary choice for sealing glass into window frames and weatherproofing around exterior window and door casings.
- General DIY & Maintenance: Perfect for sealing gaps in gutters, downpipes, and skylights.
- Kitchen & Bathroom: Suitable for general sealing around sinks, tiles, and backsplashes (where specialized anti-fungal properties are not the primary requirement).
- Automotive & Marine: Useful for basic weather-stripping, sealing light assemblies, and protecting electrical connections from moisture.
Product Benefits
- Fast Skinning Time: Forms a protective outer layer within minutes, reducing the risk of dust and debris sticking to the wet sealant.
- Non-Shrinking Formula: Ensures the seal remains tight and flush with the substrate even after years of exposure.
- Easy Application: The 280ml cartridge provides a smooth, consistent flow for professional-looking beads and joints.
Pro Tip: For a professional “mirror-smooth” finish, use a masking tape on either side of the joint before applying the silicone. Tool the bead immediately with a caulking tool or a finger dipped in a mild soapy water solution, then remove the tape while the silicone is still wet.



