



🔥 Seal the deal with confidence—firestop that works as hard as you do!
Rectorseal 66383 Metacaulk MC 150+ is a 30-ounce, water-based firestop sealant designed for professional-grade fire, smoke, and water barrier protection. Rated for up to 4 hours of fire resistance per ASTM standards, it offers flexible, non-sag application on a variety of surfaces including metal, plastic, and cables. Easy to apply with conventional tools, it cures elastomerically to accommodate dynamic movement and temperature variations, while being VOC compliant and mold-resistant for safe, durable indoor use.

| Color | Red |
| Brand | Rectorseal |
| Item Weight | 2.3 Pounds |
| Liquid Volume | 887 Milliliters |
| Item Form | Caulk |
| Surface Recommendation | Indoor/ Outdoor |
| Temperature Range | 40- 120 Degrees Fahrenheit |
| Water Resistance Level | Water Resistant |
| Number of Items | 1 |
| Manufacturer | The Rectorseal Corporation |
| UPC | 021449663830 |
| Global Trade Identification Number | 00021449663830 |
| Unit Count | 1.0 Count |
| Material | Water-based and non-sag. VOC compliant. Protected in wet & dry stages against mold growth with a combination of biocides. |
| Part Number | 66383 |
| Item Weight | 2.33 pounds |
| Product Dimensions | 2.5 x 2.5 x 14 inches |
| Country of Origin | China |
| Item model number | 66383 |
| Size | 30 oz |
| Item Package Quantity | 1 |
| Included Components | Firestop Caulk |
| Batteries Required? | No |
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