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⚡ Unlock super-strong bonds in seconds — don’t let your projects wait!
3M Scotch-Weld Instant Adhesive Primer AC79 is a clear, fast-drying primer designed to dramatically improve adhesion on low surface energy elastomers such as silicone, EPDM, and fluoroelastomers. Featuring a cure accelerator and ultra-thin consistency, it ensures rapid, reliable bonding for industrial and professional repairs. California-compliant and easy to apply, this 2 fl oz bottle is a must-have for anyone demanding durable, flexible adhesive performance on challenging materials.



| ASIN | B071W9H889 |
| Best Sellers Rank | #69,432 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #27 in Adhesive Primers |
| Brand Name | 3M |
| Color | Clear |
| Compatible Material | Rubber |
| Container Type | Bottle |
| Customer Reviews | 4.2 4.2 out of 5 stars (125) |
| Global Trade Identification Number | 00051115313882 |
| Included Components | Adhesive Primer |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Manufacturer | 3M |
| Material Type | Rubber |
| Model | AC79 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Improves Adhesion on Flexible Elastomers, Contains Cure Accelerator |
| Part Number | 31388 |
| Specific Uses For Product | Repair |
| UPC | 051115313882 |
| Unit Count | 2 Fluid Ounces |
| Viscosity Level | Low to Medium |
| Volume | 2 fluid ounces |
| Water Resistance Level | Not Water Resistant |
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