S168 Weather-resistant Silicone Sealant is a one-component, neutral-cure silicone sealant engineered for exterior building joints exposed to UV, rain, and temperature extremes from −65 °C to 150 °C. Compliant with ASTM C920 Type S, Grade NS, Class 25, it delivers >95 % elastic recovery and >1.0 MPa tensile strength — suitable for curtain-wall perimeter sealing, roof flashing, and HVAC duct joints in commercial construction.
S168
S168 Weather-resistant Silicone Sealant
ISO 9001
Professional weather-resistant silicone sealant for exterior walls, roofs, doors and windows. Excellent elasticity with >95% elastic recovery and operating range from -65°C to 150°C.
Technical Specifications
| Model | S168 |
| Colors | Black, white, grey (customizable) |
| Surface Dry Time | 20 minutes |
| Cure Speed | ~2mm/24h (23°C, 50% RH) |
| Tensile Strength | >1.0 MPa |
| Elongation | ~150% |
| Elastic Recovery | >95% |
| Hardness | Shore 45A |
| Operating Temperature | -65°C to 150°C |
| Shelf Life | 12 months |
| Packaging | 300ml tube / 590ml soft support |
Key Features
- Operating range -65°C to 150°C for extreme climates
- Elastic recovery >95% for dynamic joints
- Multiple colors available including custom colors
- Professional grade for commercial construction
Applications
- Exterior wall sealing
- Roof waterproofing
- Door & window joints
- HVAC channel sealing
Frequently Asked Questions
What is the S168 Weather-resistant Silicone Sealant used for?
The S168 Weather-resistant Silicone Sealant (S168) by Desay is designed for exterior wall sealing, roof waterproofing, door & window joints. Professional weather-resistant silicone sealant for exterior walls, roofs, doors and windows. Excellent elasticity with >95% elastic recovery and operating range from -65°C to 150°C.
What are the specifications of the S168 Weather-resistant Silicone Sealant?
Model: S168. Colors: Black, white, grey (customizable). Surface Dry Time: 20 minutes. Cure Speed: ~2mm/24h (23°C, 50% RH). Tensile Strength: >1.0 MPa. Elongation: ~150%. Elastic Recovery: >95%. Hardness: Shore 45A. Operating Temperature: -65°C to 150°C. Shelf Life: 12 months. Packaging: 300ml tube / 590ml soft support.
Does the S168 Weather-resistant Silicone Sealant come with certifications?
Yes, the S168 Weather-resistant Silicone Sealant is ISO 9001 certified.
How can I get a quote for the S168 Weather-resistant Silicone Sealant?
Use the inquiry form on this page, or contact us at jack@desaiglue.com. We respond within 24 hours.
What international standards does the S168 silicone sealant meet?
The S168 is manufactured under ISO 9001 quality management and formulated to meet ASTM C920 Type S, Grade NS, Class 25 requirements for elastomeric joint sealants. Its operating range of −65 °C to 150 °C and >95 % elastic recovery exceed the minimum thresholds defined by the standard for dynamic building joints.
Is the S168 silicone sealant safe for indoor use?
Yes. The S168 uses a neutral-cure (oxime) system that releases minimal volatile organic compounds during curing — significantly less than acetic-acid-cure alternatives. For VOC exposure guidelines, refer to the U.S. EPA VOC guidance. Always ensure adequate ventilation during the 24-hour full-cure period.
How does silicone sealant differ from polyurethane or acrylic sealant?
Silicone sealants like the S168 offer superior UV resistance, wider temperature tolerance (−65 °C to 150 °C vs typically −30 °C to 80 °C for polyurethane), and longer lifespan (20+ years vs 5-10 years). Polyurethane is paintable but less UV-stable; acrylic is cheapest but shrinks over time. For a deeper comparison, see the Wikipedia overview of silicone rubber properties.
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