Silicone
| Feature | Type 1 Silicone Sealant | Type 2 Silicone Sealant |
|---|---|---|
| Composition | Acetoxy-cure silicone | Oxime-cure silicone |
| Primary Use | General-purpose indoor applications | Outdoor applications, better UV resistance |
| Flexibility & Strength | Typically less flexible and strong than Type 2 | More flexible and strong, suitable for outdoors |
| Odor | Strong acetic acid odor (vinegar-like) | Less odor, more neutral |
| Curing Process | Releases acetic acid during curing | Releases alcohol or ketoxime |
| Applications | - Window and door installation - Bathroom and kitchen caulking - Glass and tile work | - Metal surfaces - Automotive gaskets and seals - Exterior weatherproofing - Roofing and gutters |
| Handling Notes | - Use in well-ventilated areas due to strong odor - Not recommended for metals or concrete | - Suitable for wider range of materials - Better for sensitive metals and materials |
| Risks | - Corrosive to certain metals like copper - Not suitable for aquariums or underwater use | - May cause skin irritation - Requires careful application to avoid uneven curing |
| Color and Finish | Typically clear, white, or black | Wide range of colors, often more aesthetic |
| Temperature Resistance | Generally good, but inferior to Type 2 | Superior temperature resistance |
| UV Resistance | Limited | Excellent |
| Cost | Often less expensive | Slightly more expensive |