Basics of Sealant Chemistries
What’s the Difference Between Different Types of Sealants?
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Following is a list of the seven major elastomeric sealant types or chemistries. Click on a chemistry to learn more regarding basic uses, benefits and limitations.
- Acrylic (solvent based)
- Butyls (solvent based)
- Acrylic Latex (emulsion or water based)
- Polysulfide
- Polyurethane
- Silicones
- Silyl Terminated Polyurethane(Silicone / Urethane Hybrid)
Environmental Effects on Sealant Cure Chemistry
| Conditions | ||||
| Cure Type | Higher Temperature | Lower Temperature | Higher Humidity | Lower Humidity |
| Chemical Cure-Two Component | Reduces Cure Time | Increases Cure Time | Little Effect | Little Effect |
| Moisture Cure-One Component | Reduces Cure Time | Increases Cure Time | Reduces Cure Time | Increases Cure Time |
| Drying Solvent Evaporation | Reduces Cure Time | Increases Cure Time | Little Effect | Little Effect |
| Drying Moisture Evaporation | Reduces Cure Time | Increases Cure Time | Increases Cure Time | Reduces Cure Time |
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