3M SB93 Rite-Lok Cyanoacrylate

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Description for 3M SB93 Rite-Lok Cyanoacrylate

Designed to give optimum performance and high strength bonds on metals.

Application Type	Bond, Adhesive: Instant Adhesives
1 Part or 2 Part	1 Part
Material Form	Liquid
Substrate	Metals, Low surface energy plastics, polypropylene, polyethylene, Low surface energy plastics
Manufacturer	3M
Chemistry	Cyanoacrylate, Methyl
Cure Method	Moisture
Cure Time (min)	1,440
Viscosity (cPs)	very low, 2 to 5
Color	Clear
Chemical Resistance	most oils
Relative Solvent Resistance	Chemical Resistance: Solvent resistance
Key Specifications	CID (United States Government Commercial Item Description): A-A-3097: Type I, Class 1

Best Practices for 3M SB93 Rite-Lok Cyanoacrylate

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Technical Data for 3M SB93 Rite-Lok Cyanoacrylate

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Overview

Application Type
- Adhesive - Bond
- Adhesive: Instant Adhesives
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
Material Form
- Liquid
Substrate
- Low Surface Energy - Low surface energy plastics
- Metal - Metals
- Plastic - Low surface energy plastics
- Polypropylene
- Polyethylene (LDPE, HDPE) - polyethylene
- Other - acidic surfaces, leather
Industry
- Other - smooth, even, close fitting parts, preassembled parts
Chemistry
- Cyanoacrylate (CA) - Cyanoacrylate
- Other - Methyl
Application Method
- Other - Hand applied
Cure Method
- Moisture / Condensation Cure - Moisture
Color
- Clear / Transparent - Clear
Key Specifications
- CID (United States Government Commercial Item Description): A-A-3097: Type I, Class 1

Specifications

Cure Specs

Cure Time (min)	1,440
Viscosity (cPs)	very low, 2 to 5	Test Method
Fixture or Handling Strength Time (min)	0.25 to 0.58

Bond Strength

General Bond Strength (psi)	High	Test Method
Shear Strength (psi)	3,100	Test Method
Tensile Strength (psi)	5,100	Test Method

Material Resistance

Chemical Resistance	most oils
Relative Solvent Resistance	Chemical Resistance: Solvent resistance

Other Properties

Specific Gravity	1.090

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™ General Purpose Instant Adhesives can be expected to have a shelf life of one year. Lower temperatures cause increased viscosity of a temporary nature and also will cause water to condense on the container. Therefore, containers stored at low temperatures should be allowed to return to room temperature before opening so that water does not come in contact with the adhesive and cause adhesive gelation.
Shelf Life Temperature (°F)	140 to 176, 39
Shelf Life (mon)	12

Best Practices for 3M SB93 Rite-Lok Cyanoacrylate

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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.
  
  Rite-Lok™ Activators may be required if there are gaps or porous surfaces. If substrates have low surface energy plastics (e.g., polyethylene, polypropylene), or if substrates have acidic surfaces (e.g., paper and 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.
  
  3M™ Activators may be used where cure speed needs to be accelerated. However, the use of an activator can reduce the final bond strength by up to 30%.
  
  Low humidity or low temperature conditions will slow down the cure rate.
  
  After curing, Rite-Lok™ General Purpose Instant Adhesive bonds are suitable for use up to about 180°F (82°C). At 180°F (82°C) the bonds will be approximately 70% of the strength at room temperature and at 212°F (100°C) about 50% of full strength.
  
  Cyanoacrylate bond resistance to most oils and solvents is excellent. Cyanoacrylates are not resistant over time to high levels of moisture or humidity.
Comparable Materials for 3M SB93 Rite-Lok Cyanoacrylate

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