3M 7100039262 Instant Adhesive Primer AC79 2 Fl Oz

Product Description

The 3M 7100039262 is a California-compliant instant adhesive primer formulated for use with cyanoacrylate-based instant adhesives on difficult-to-bond surfaces. Sold as AC79, this colorless primer is designed to prepare elastomeric substrates that typically resist standard adhesive bonding. It ships in a 2 fl oz unit and weighs 0.15 pounds. Adhesive technicians, maintenance professionals, and industrial assembly workers apply this primer directly to each elastomeric surface before applying the instant adhesive, creating a more reliable bond on substrates that would otherwise bond poorly or fail prematurely.

AC79 is used in applications where silicone, EPDM, and other elastomeric materials must be bonded using instant adhesives. Typical use cases include sealing, gasketing, and repair work on rubber components in HVAC systems, plumbing assemblies, and general industrial maintenance. The primer is applied to each mating surface and allowed to flash off before the instant adhesive is applied. It is particularly useful in field service environments where elastomeric parts need fast, reliable bonding without specialized surface preparation equipment.

Key Features

• California-compliant formulation for use in regulated environments
• Colorless finish leaves no visible residue on bonded surfaces
• Prepares silicone, EPDM, and other elastomers for instant adhesive bonding
• Apply to each substrate surface before adhesive application
• Compact 2 fl oz size suited for field service and bench work

Compatibility

Designed for use with instant adhesives on elastomeric substrates including silicone and EPDM rubbers. Compatible with cyanoacrylate instant adhesive systems where elastomeric surface preparation is required.

Installation Notes

Apply AC79 to each elastomeric substrate and allow the primer to fully flash off before applying the instant adhesive. Work in a well-ventilated area, as instant adhesive primers and cyanoacrylates produce vapors that can cause irritation. Keep the applicator cap sealed when not in use to prevent evaporation and contamination. Follow all applicable safety data sheet guidelines for storage and handling.

Technical Specifications

• Part Number: AC79
• Color: Colorless
• Volume: 2 fl oz
• Weight: 0.15 pounds
• Unit of Measure: Each
• UPC: 00051115313882

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100039262