66389 - Rectorseal - METACAULK MC150+ 5 GAL PAIL - 1PK

The RectorSeal 66389 - Metacaulk 150+ (5 Gallon Pail, 1PK) is a general-purpose, intumescent firestop sealant designed for construction joints and through penetrations.

🔥 Product Overview:

• SKU: 66389
• Size: 5 gallons
• Color: Red
• Form: Water-based, non-sag caulking grade paste
• Application: Can be applied using a caulking gun, bulk loading gun, trowel, or pumped directly from the pail 
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🧪 Features:

• Fire-Rated: Up to 4 hours per ASTM E814 (UL1479) and ASTM E1966 (UL 2079) 
• Flexible & Elastomeric: Cures to a seal that accommodates dynamic movement
• VOC Compliant: Less than 10 g/L
• STC Rating: 51 (acoustical sealant)
• Mold Resistant: Protected in both wet and dry stages with biocides
• Shelf Life: Minimum 3 years
• Temperature Range: +40°F to +120°F