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Sealants
Metacaulk 350i Firestop Sealant
Single component, water-based intumescent sealant for a wide range of vertical and horizontal applications. Up to 3-hour fire resistance rating. Non-sag, elastomeric cure with STC 53 sound rating. Paintable with 3-year shelf life.
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UL-Classified SystemsComponents of tested UL firestop systems
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Authorized DistributorGenuine Metacaulk® / RectorSeal
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TDS & SDSFull technical documentation
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Same-Day ShippingOrder by 11 AM CST
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Spec & Submittal SupportCode & system help
Key features
- UL Classified systems up to 3 hours (ASTM E814/UL 1479, UL 2079)
- Highly intumescent, flexible, excellent freeze-thaw
- For interior use, paintable
- STC Rating 53, VOC <10 g/L
- 3-year shelf life
- FBC System Compatible
Typical applications
- Metal pipes
- insulated pipes
- fiberglass & plastic pipes
- wall construction joints
- power & telephone cables
Technical data
| VOC | <10 g/L |
|---|---|
| Color | Dark Red |
| Application Temp | 40°F–120°F |
| Density | 1.32 kg/l |
| Chemical Base | Water Based Acrylic |
| Cure Time | 3–4 weeks |
| Skin Time | 30 min @ 77°F |
| STC Rating | 53 |
| Viscosity | 300,000 cp |
Installation overview
- Clean all contact surfaces free from debris and contaminants
- Install required backing material per system design
- Apply Metacaulk 350i ensuring contact with all surfaces for maximum adhesion
- Tool sealant to a defect-free finish
- Clean all equipment with water immediately after use