3M Scotch SI100

3M Scotch SI100
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Electrical Tapes
Tapes for Scrapbooking

3M Scotch SI100 Scotch-Weld Instant Adhesive Glue

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  • Bottle Size
    0.7 ounces
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Before ordering, please click on the "Product Description & Specs" tab below for more information about this item.

SI100 Standard sizes


0.7 ounces


Single Bottle (1-9 Bottles)

1 - 2 Cases (10-29 Bottles)

3 - 4 Cases (30-49 Bottles)

5+ Cases (>= 50 Bottles)









Product Description

3M SI100 Rite-Lok Instant Adhesive Glue is a low-medium viscosity cyanoacrylate adhesive that is fast curing and useful for general purpose bonding. It is a single component, high strength ethyl cyanoacrylate liquid adhesive which is designed to bond to a variety of substances including most plastics, rubbers, metals, and other common substrates. That product was previously referred to as EC100 Rite-Lok. In a new bottle the liquid should come up to just under where it says 'Surface Insensitive Instant Adhesive' on the bottle label.

Some tips for applying 3M SI100:

  • Ensure parts are clean, dry, and free from oil and grease.
  • Bond speed is typically very fast so ensure that parts are properly aligned before dispensing.
  • 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.


Technical Information

3M Scotch SI100 Scotch-Weld Instant Adhesive Glue
  • Adhesive: ethyl cyanoacrylate (CA)   How are adhesives different?
  • Tensile Strength: 2900 pounds per inch (longitudinal)
  • Service/Operating Temperature: -65°F to 180°F
  • Specific Gravity: 1.06
  • Viscosity: 80 - 120 cps
  • Time to Handling Strength: 10 - 40 sec
  • Full Cure Time: 24 hr
Note: Specifications are those given by manufacturers and are not tested for accuracy.
3M Scotch SI100 Scotch-Weld Instant Adhesive Glue
hot melt rubber (synthetic)
Offers the widest range of application flexibility available. Exhibits excellent processing performance whether manually or automatically applied. Has superior tensile strength, adhesion properties and holding force which ensures consistent, reliable seals. Hot melt adhesive will bond faster to a surface which is referred to as quick-grab or quick-stick. It typically has higher tack (will feel stickier to the touch), but is also softer. It has lower heat resistance, shear resistance, and sometimes UV resistance than an acrylic adhesive. NOTE: it is called hot melt because the adhesive is applied hot by the manufacturer and then hardens as it cools (you do not need to apply heat to the tape yourself).
natural rubber
Properties are similar to that of hot melt rubber, but natural rubber often holds where other adhesives won't (recycled fibers, dust, cold, heat and heavy loads). It provides good overall adhesion and moisture resistance.
Offer excellent performance, especially for applications in temperatures less than 40°F and greater then 120°F. It provides excellent clarity, has high shear strength, is usually more permanent/durable even when exposed to moisture, and it ages well over extended periods in fluorescent and sunlight. Since it remains clear for the life of the application and does not yellow over time it is ideal for applications such as sealing white cartons. While it has good initial adhesion it does take 24-48 hours to cure and to achieve its maximum bond strength (has gradual adhesion buildup). Another difference between hot melt rubber and acrylic adhesive is if you fold tape over making the two adhesive sides touch the acrylic adhesive will remain attached to the carrier (e.g. paper, film) while a hot melt adhesive will stick to itself and pull off of the carrier. It is the best choice for clarity, UV resistance and aging characteristics.
Is great for extreme temperature applications since silicone adhesive can work in continuous operating temperatures from -100°F to 500°F. They also exhibit good chemical resistance, retain electrical properties, and remove cleanly with little or no residue.
zinc oxide
Zinc oxide based adhesive formula is a skin-friendly adhesive which is commonly used on sports medicine tapes.
Thickness, AKA caliper or gauge, refers to the distance from one surface of a tape backing, or adhesive, to the other.
1 mil = 1/1000 of an inch
Examples: 1/16 inch = 62.5 mils; 1/32 inch = 31.25 mils
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