INGADA™ SR-25L Low-Modulus Weatherproof Silicone Sealant – Flexible Joint
High-Flexibility Weatherproof Caulk for Stress-Sensitive Joints and Cladding Systems
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The Problem: High-modulus sealants can pull too hard on fragile substrates, causing the material itself to crack or the bond to pop.
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The SR-25L Solution: “Gentle Strength.” Our low-modulus formula moves with your building, not against it. Perfect for PVC and expansion joints where a softer touch is required to maintain a lifetime seal.
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Low Modulus Advantage: Minimizes stress transfer to the substrate bond line, preventing adhesion failure in delicate or sensitive materials.
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±25% Dynamic Movement: Engineered to accommodate significant joint movement while maintaining long-term elastic recovery.
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Non-Migration Formula: White-oil-free design prevents unsightly oily halos or stains on porous adjacent surfaces.
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Optimal Adhesion: Specifically formulated for PVC, wood, aluminum, and masonry, providing a "gentle" yet powerful bond.
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Efficiency-Focused: Quick tack-free time (1–2 hours) allows for faster site cleanup and reduced dust pickup on the seal.
Technical Comparison Table
| Feature | Typical Value |
| Modulus Type |
Low Modulus (Reduced Stress) |
| Movement Class |
Class 25 (±25%) |
| Curing Speed |
~24 Hours Full Cure |
| Compatibility |
PVC, Aluminum, Tile, Wood |
Q:What is the advantage of the SR-25L "Low Modulus" formula for general construction?
A：It provides high flexibility with low stress on joints, making it a reliable and cost-effective choice for window and door installations where reduced stress is desired.
Q:Can SR-25L be used on PVC and wood?
Yes, it is designed for excellent adhesion to wood, PVC, aluminum, and masonry.
Q:Is this product suitable for interior use?
A：Yes, it is an ideal multi-purpose sealant for both interior and exterior gap sealing and perimeter joints.
Q:How quickly does SR-25L cure?
A：It is touch-dry in 1 to 2 hours and typically achieves a full cure within 24 hours under normal conditions.
Q:Does it prevent staining on adjacent surfaces?
A：Yes. Like the premium lines, it is white-oil-free to prevent unsightly stains and maintain the building's appearance.
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ASTM C920 Class 25
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GB/T 14683
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CE Certified & SGS Tested
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