• Description for 3M PR80

    Formulated with a unique elastomer that maximizes impact, vibration, peel, and thermal cycling resistance while providing tough flexible bonds. These adhesives are ideally suited for bonding flexible substrates and dissimilar materials.

    *See Terms of Use Below

    Chemical Resistance Excellent, Chemical Resistance: Excelent Solvent resistance, Most oils
    Application Type Bond
    1 Part or 2 Part 1-Part
    Material Form Liquid
    Substrate dissimilar materials, porous substrate surfaces, polyethylene, leather, Paper, Low surface energy plastics, polypropylene, Low surface energy plastics
    Manufacturer 3M
    Chemistry Rubber toughened cyanoacrylate, Ethyl Hybrid
    Cure Method Moisture
    Cure Time (min) 1,440
    Viscosity (cPs) medium, 300 to 1,000
    Color Black
    High Temperature Resistance (°C) Thermal cycling
  • Technical Data for 3M PR80

    • Chemical Resistance
      • Chemical Resistance - Excellent, Most oils
      • Chemical Resistance : Relative Solvent Resistance - Excelent Solvent resistance
    • Application Type
    • 1 Part or 2 Part
      • 1-Part
    • Material Form
      • Liquid
    • Substrate
      • Porous Substrates - porous substrate surfaces
      • Leather
      • Low Surface Energy - Low surface energy plastics
      • Dissimilar Substrates - dissimilar materials
      • Plastic - Low surface energy plastics
      • Polyethylene (LDPE, HDPE) - polyethylene
      • Polypropylene
      • Paper
      • Other - flexible substrates, acidic surfaces
    • Chemistry
      • Toughened - Rubber toughened cyanoacrylate
      • Other - Ethyl Hybrid
    • Application Method
      • Other - Hand applied
    • Cure Method
      • Moisture / Condensation Cure - Moisture
    • Color
      • Black
    Cure Specs
    Cure Time (min) 1,440
    Viscosity (cPs) medium, 300 to 1,000 Test Method
    Fixture or Handling Strength Time (min) 0.33 to 0.83
    Set Time (min) very fast
    Bond Strength
    Peel Strength (piw) Peel Resistance
    Shear Strength (psi) 1,500 Test Method
    Impact Strength (psi) Impact strength
    Material Resistance
    High Temperature Resistance (°C) Thermal cycling
    Impact Resistance Impact resistance
    Vibration Resistance/Shock Resistance Vibration resistance
    Other Properties
    Specific Gravity 1.100
    Business Information
    Shelf Life Details For short term storage (<30 days), keep adhesive in a cool (60°F to 80°F [16°C to 27°C]), dry place out of direct sunlight. Keep containers tightly covered and free of moisture. Refrigeration (40°F [4°C]) gives optimum long term storage stability.;Rite-Lok™Rubber Toughened Instant Adhesives can be expected to have a shelf life of one year from the date of shipment from 3M when stored under refrigerated conditions.
    Shelf Life Temperature (°F) 140 to 176, 39
    Shelf Life Type From the date of shipment
    Shelf Life (mon) 12
  • Best Practices for 3M PR80

    *See Terms of Use Below

    1. Surface Preparation

      For optimum strength structural bonds, paint, oxide films, oils, dust, mold release agents, and all other surface contaminants must be completely removed. However, the amount of surface preparation depends on the required bond strength and the environmental aging resistance desired by the user. Typical quick surface preparation would include wiping with a clean solvent (such as isopropyl alcohol), abrading the surface with a clean fine abrasive, and then wiping again with a clean solvent to remove loose particles.

      Note: When using solvents, extinguish all ignition sources, including pilot lights, and follow the manufacturer’s precautions and directions for use

      Ensure that parts are clean, dry, and free from oil and grease.

      Ensure that parts are clean, dry, and free from oil and grease.

      A Rite lok™ Instant Adhesive Activator may be required if there are bonding gaps or porous substrate surfaces, if substrates are low surface energy plastics (e.g., polyethylene, polypropylene ) or if substrates have acidic surfaces (e.g., paper, leather).

    2. Application

      Bond speed is typically very fast so ensure that parts are properly aligned before dispensing.

      Product is normally hand applied from the bottle. Apply sparingly to one surface and press parts firmly together until handling strength is achieved. As a general rule, as little cyanoacrylate as possible should be used. Over application will result in slower cure speed and lower bond strength.

    3. Curing

      Full bond strength will typically be achieved within a 24 hour cure time.

      Low humidity or low temperature conditions will slow down the cure rate.

      After curing, Rite-Lok™ Rubber Toughened Instant Adhesive bonds are suitable for use at temperatures up to 200F (93°C) continuously, intermittently up to 250°F (121°C). At 220°F (105°C) the bond will be approximately 40% of the strength at room temperature.

      Cyanoacrylate bond resistance to most oils and solvents is excellent. Long term humidity, moisture, or water immersion may affect the strength of a cured cyanoacrylate bond depending on the substrates and the bond gap. Testing is recommended to evaluate the effect.

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Viscosity Test Methods
Viscosity Test Method
300 to 1,000 cPs Brookfield LFT, #2 spindle
Shear Strength Test Methods
Shear Strength Type Test Method
1,500 psi Overlap shear strength ASTM D1002