3M 7100003278 Tape Primer 94 Half Pint

Product Description

The 3M 7100003278 is Tape Primer 94, a surface-preparation primer formulated to improve the adhesion of pressure-sensitive tapes, films, and foams to difficult or low-energy substrates. Applied before tape installation, it chemically promotes bonding on surfaces that standard adhesive-backed products may not grip reliably on their own. This primer is packaged in a half-pint container and is commonly used by HVAC technicians, plumbers, electricians, and other trade professionals when securing vapor barriers, duct sealing tapes, pipe wrap, or foam insulation in demanding environments.

Tape Primer 94 is suited for both residential and light commercial applications where tape adhesion to metal, glass, concrete, painted surfaces, or plastic substrates is required. It is typically applied ahead of sealing operations in HVAC duct systems, plumbing rough-ins, and electrical penetration work. The half-pint size is appropriate for job-site use or smaller-scale applications. Cases are packed 12 units per case bulk.

Key Features

• Promotes adhesion of pressure-sensitive tapes and films to low-energy or difficult substrates
• Half-pint container sized for job-site portability and moderate-volume use
• Available in bulk case quantity of 12 units per case
• Compatible with a broad range of 3M tapes used in HVAC, plumbing, and electrical applications

Compatibility

Designed for use as a surface-preparation primer ahead of pressure-sensitive tape application across HVAC, plumbing, electrical, and general construction trade work. Specific tape compatibility should be confirmed against 3M product documentation for the tape being used.

Installation Notes

Apply Tape Primer 94 to clean, dry surfaces before installing the pressure-sensitive tape. Allow the primer to dry fully before applying tape per the tape manufacturer's instructions. Use in well-ventilated areas, as the product contains solvents. Keep away from open flame or ignition sources during application and drying.

Technical Specifications

• Size: Half pint
• Case Pack Quantity: 12 units per case
• UOM: Case
• Weight: 7.6 pounds
• UPC: 00021200239267

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100003278