Application Type Bond 1 Part or 2 Part 1 Part Material Form Single coated tape Substrate acrylic, Aluminum, glass, ABS, PVC (non-plasticized), enameled steel, Stainless Steel, latex-painted wood, lacquered wood Manufacturer 3M Chemistry Acrylic, Urethane Cure Method Pressure Sensitive Color Natural-white Chemical Resistance Acetone, Gasoline, JP-4 (jet fuel), MEK High Temperature Resistance (°C) 93, 177 Low Temperature Resistance (°C) -18 Density (g/cm³) High, 0.256
Technical Data for 3M 4108
Shear Strength (psi) Excellent Tensile Strength (psi) 130 Test Method
Chemical Resistance Acetone, Gasoline, JP-4 (jet fuel), MEK High Temperature Resistance (°C) 93, 177 Low Temperature Resistance (°C) -18
Thermal Conductivity (W/m°K) 0.07 Test Method Surface Resistivity (O) 6e14 (ohms/sq), 1e15 (ohms/sq) Test Method
Elongation (%) 80 Test Method Shore OO Hardness 75 Test Method
Density (g/cm³) High, 0.256 Test Method
Shelf Life Details 18 months from date of manufacture.;Store in the original cartons at 60-80°F (15-27°C) and 50% relative humidity. Shelf Life Temperature (°F) 140 to 176 Shelf Life Type From date of manufacture Shelf Life (mon) 18
Best Practices for 3M 4108
To obtain optimum adhesion, the bonding surface must be clean, dry, and well unified. Some typical surface cleaning solvents are isopropyl alcohol and heptane.
Be sure to follow the solvent manufacturer’s precautions and directions for use when handling solvents.
Bond strength is dependent upon the amount of adhesive-to-surface contact. Firm application pressure develops better adhesive contact and helps improve bond strength.
Initial tape application to surfaces at temperatures below 50°F (10°C) is not recommended because the adhesive becomes too firm to adhere readily. However, once properly applied, low temperature holding is generally satisfactory.
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Tensile Strength Test Methods
|Tensile Strength||Test Method|
|130 psi||ASTM D-3574, Die "A"|
Dielectric Strength Test Methods
|Dielectric Strength||Test Method|
Surface Resistivity Test Methods
|Surface Resistivity||Test Method|
|6e14 (ohms/sq)||Non-adhesive side, ASTM D-257|
|1e15 (ohms/sq)||Adhesive side, ASTM D-257|
Thermal Conductivity Test Methods
|Thermal Conductivity||Test Method|
|0.07 W/m°K||ASTM C-518|
Elongation Test Methods
|80 %||ASTM D-3574, Die “A”|
Shore OO Hardness Test Methods
|Shore OO Hardness||Shore Hardness Test Method|
|75||ASTM D-2240, Foam with adhesive|
Density Test Methods
|0.256 g/cm³||ASTM D-3574, Foam with adhesive|