66386 - Rectorseal - 5 GAL MC1200 CAULK GRADE WHITE - 1PK

The RectorSeal 66386 - Metacaulk 1200 Caulk Grade White (5 Gallon Pail) is a high-performance, single-component firestop sealant designed for vertical and horizontal construction joints, especially in areas subject to dynamic movement.

🔥 Product Overview:

• SKU: 66386
• Size: 5 gallons
• Form: Caulk grade (non-sag, easy to apply with caulk gun or trowel)
• Color: White
• Application: Ideal for vertical surfaces and general-purpose fire-rated sealing

🧪 Features:

• Fire-Rated:
  • Up to 4 hours per ASTM E1966/UL 2079 (building joint systems)
  • Up to 3 hours per ASTM E814/UL1479 (penetration systems) 
• Elastomeric Seal: Cures to a flexible membrane suitable for vibration and movement
• Mold Resistant: Protected in both wet and dry stages with biocides
• VOC Compliant & Paintable
• Freeze-Thaw Stable: Excellent durability in varying climates
• Shelf Life: Minimum 3 years
• No Mixing Required: Ready-to-use straight from the pail