3M PR851-454

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Description for 3M PR851-454

Formulated for extended resistance to impact, vibration, stress, peel, and humidity applications. It is faster curing than the Rite-Lok™ Rubber Toughened Instant Adhesives.

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Chemical Resistance	Most oils, Chemical Resistance: Excellent Solvent Resistance
Application Type	Bond, Adhesive: Instant Adhesives
1 Part or 2 Part	1-Part
Material Form	Liquid
Substrate	Glass, paper, Low surface energy plastics, polypropylene, porous substrate surfaces, polyethylene, Low surface energy plastics
Manufacturer	3M
Chemistry	Cyanoacrylate, Ethyl Hybrid
Cure Method	Moisture
Cure Time (min)	Fast, 1,440
Viscosity (cPs)	Medium, 200 to 400
Color	Clear
High Temperature Resistance (°C)	160
Low Temperature Resistance (°C)	-65

Best Practices for 3M PR851-454

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Technical Data for 3M PR851-454

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Overview

Chemical Resistance
- Chemical Resistance - Most oils
- Chemical Resistance : Relative Solvent Resistance - Excellent Solvent Resistance
Application Type
- Adhesive - Bond
- Adhesive : Instant Adhesives
1 Part or 2 Part
- 1-Part
Material Form
- Liquid
Substrate
- Porous Substrates - porous substrate surfaces
- Low Surface Energy - Low surface energy plastics
- Glass
- Plastic - Low surface energy plastics
- Polypropylene
- Polyethylene (LDPE, HDPE) - polyethylene
- Paper
- Other - flexible substrates, leather, acidic surfaces
Chemistry
- Cyanoacrylate (CA) - Cyanoacrylate
- Other - Ethyl Hybrid
Application Method
- Other - Hand applied
Cure Method
- Moisture / Condensation Cure - Moisture
Color
- Clear / Transparent - Clear

Specifications

Cure Specs

Cure Time (min)	Fast, 1,440
Viscosity (cPs)	Medium, 200 to 400	Test Method
Fixture or Handling Strength Time (min)	0.17 to 0.58

Bond Strength

Shear Strength (psi)	2,900	Test Method
Impact Strength (psi)	Impact strength

Material Resistance

High Temperature Resistance (°C)	160
Impact Resistance	Impact Resistance
Low Temperature Resistance (°C)	-65
Vibration Resistance/Shock Resistance	vibration resistance

Hardness

Flexibility	Flexible

Other Properties

Specific Gravity	1.100

Business Information

Shelf Life Details	Storage: 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™ Flexible Instant Adhesive can be expected to have a shelf life of one year from the date of shipment from 3M when stored under refrigerated conditions.;Rite-Lok™ Flexible Instant Adhesive 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 PR851-454

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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.
2. Application
  
  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).
  
  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.
  
  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.
Comparable Materials for 3M PR851-454

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Spec Engine^® Results
- 802(PermaBond)
  A low viscosity modified ethyl cyanoacrylate suitable for applications where high temperature resistance is required. This material is fast setting and has good adhesion to rubber, metal and plastics.
- SB95 Rite-Lok Cyanoacrylate(3M)
  Bond rough, porous, contaminated, and acidic substrates including wood, cardboard, veneer, fabric, cork, and leather.
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