INGADA™ SR-50L Low-Modulus Silicone Sealant – Curtain Wall & Cladding
Ultra-Low Modulus Silicone Weatherproof Sealant
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The Problem: High-rise buildings face intense wind loads and thermal expansion that cause standard sealants to tear or pull away from the substrate.
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The Solution: SR-50L acts as a “flexible shock absorber,” moving with the building while maintaining a perfect seal, ensuring “Stress in Retreat” for structural integrity.
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±50% Movement Capacity: Engineered for high-rise unitized curtain walls and facades subject to extreme thermal and dynamic displacement.
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Ultra-Low Modulus Technology: Minimizes stress on sensitive substrates and delicate finishes, ensuring the longevity of the joint and the building envelope.
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Zero White Oil Formula: Free of plasticizers and white oils to prevent unsightly staining, migration, or shrinkage over time.
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Extreme Temperature Resilience: Maintains stable performance across a wide thermal range from -50°C to 150°C.
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Superior Substrate Adhesion: Delivers high-performance bonding to coated glass, anodized aluminum, and composite panels.
Technical Comparison
| Feature | SR-50L (High Performance) | Standard Silicone (SR-M20/25) |
| Movement Class |
±50% (Class 50) |
±20% to ±25% |
| Modulus |
Ultra-Low (Minimal Stress) |
Moderate to High |
| Purity |
100% Silicone (No White Oils) |
May contain extenders |
| Primary Use |
High-Rise & Precision Facades |
General Perimeter Sealing |
Q:Why is "Low Modulus" critical for curtain wall systems?
A：An ultra-low modulus means the sealant transmits minimal stress to the substrates during joint displacement, which is essential for protecting delicate or high-movement glass and metal facades.
Q:Does SR-50L cause staining on sensitive materials?
A：No. It is free of plasticizers and white oils, which prevents migration and ensures the long-term aesthetic integrity of sensitive surfaces.
Q:What is the movement capacity of SR-50L?
A：It offers a high-performance 50-grade movement capacity, accommodating ±50% joint displacement.
Q:What substrates are most compatible with SR-50L?
A：It is ideal for high-adhesion requirements on coated glass, anodized aluminum, stainless steel, granite, and porcelain panels.
Q:How long does it take for a full cure?
A：Under standard conditions, SR-50L requires 48 to 72 hours to achieve a full cure.
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ASTM C920 (Type S, Grade NS, Class 50)
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GB/T 14683
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CE Certified & SGS Tested
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