The Silicone Sealant "BOSS" Flexsil Clear is a premium-quality, single-component sealant designed to deliver exceptional performance in a wide range of sealing and bonding applications. Supplied in a convenient 260ML cartridge, it is ready to use straight out of the pack, with no mixing required, making application quick, clean, and efficient for both professionals and DIY users. Its clear finish ensures a neat and discreet appearance, making it ideal for projects where a seamless and unobtrusive seal is required.

This high-grade sealant offers excellent weather resistance, allowing it to maintain its integrity and protective properties even when exposed to harsh outdoor conditions such as sunlight, rain, and fluctuating temperatures. Once fully cured, the sealant does not dry out, shrink, or become brittle over time. Instead, it retains a permanently rubbery and flexible texture, preventing cracks, tears, or splitting, which ensures a long-lasting seal in both interior and exterior applications.

Engineered to perform reliably across a wide temperature range, the BOSS GP Flexsil Clear is well-suited for use in Sri Lanka’s varying climate conditions. Its flexibility and adhesion make it a dependable choice for all general sealing applications, from small household repairs to larger industrial projects.

The sealant is particularly ideally suited for sealing glass windows, ensuring a secure and weatherproof barrier against moisture and drafts. It is also widely used in shopfront installations, providing a clean and professional finish while protecting against environmental exposure. For aluminium joints, it offers excellent adhesion and flexibility, preventing leaks and maintaining a polished appearance. In showcase assembly, it provides clear, precise, and strong bonding without clouding or discolouring over time.

Beyond architectural applications, the BOSS GP Flexsil Clear is also trusted in bus-body building and automobile manufacturing, where it is used to seal joints, panels, and fixtures for durability, vibration resistance, and aesthetic appeal. This versatility makes it a go-to choice for contractors, builders, and fabricators who require a reliable, clear, and high-performance sealant that works across multiple materials and environments.

Whether used for glass, aluminium, metal, or other compatible surfaces, the BOSS GP Flexsil Clear offers a perfect combination of ease of application, long-term durability, and professional results. Its superior sealing capabilities ensure protection from moisture, air, dust, and vibration, making it an essential product for construction, fabrication, and maintenance tasks. Designed with quality in mind, this clear silicone sealant delivers performance you can depend on, project after project.

Q1: Will Flexsil Clear corrode aluminum?
No—Flexsil uses a neutral (acetoxy) cure that’s safe for aluminum, glass, ceramics, UPVC, and painted surfaces.

Q2: Is it suitable for wet areas like bathrooms?
Yes—it offers waterproof, mildew-resistant sealing with strong flexibility for expansion joints.

• Name: Silicone Sealant BOSS Flexsil Clear
• Color: Clear
• Brand: BOSS
• Packaging: 260ML
• Ease of use, one-part sealant, no mixing required.
• Good weather resistance.
• The cured sealant also does not dry out or become brittle over time.
• The cured sealant stays rubbery without tearing or cracking.
• Wide temperature applicability.
• All general sealing applications.
• Ideally suited for sealing, glass windows, shopfront, aluminium joints, showcases, bus-body building, and automobile manufacturing.