Application Type Bond, Seal 1 Part or 2 Part 1 Part Material Form Foam Tape Substrate Aluminum, Glass, ABS, PVC (non-plasticized), enameled steel, Stainless Steel, latex-painted wood, Acrylic, lacquered wood Industry Printers, Recessed lighting seal, Automotive dash boards, Aircraft lights, Computers, Keyboards, Door seal, Window seal, Aircraft lights Manufacturer 3M Chemistry Urethane, Acrylic Cure Method Pressure Sensitive Color Charcoal grey Aging Resistance Excellent Aging resistance Chemical Resistance Acetone, Ammonia Cleaner, Engine Oil, Gasoline, JP-4 (jet fuel), MEK, Mineral Spirits, Soapy Water Relative Solvent Resistance Chemical Resistance: Solvent resistance High Temperature Resistance (°C) 66, 121 Low Temperature Resistance (°C) -29 Density (g/cm³) Low, 2 (lb/cu ft) Key Specifications meets F.A.R requirement
Technical Data for 3M 4318
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
- Tape - Foam Tape
- Pressure Sensitive (min) - Pressure Sensitive
- Gray - Charcoal grey
- UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) - meets F.A.R requirement
Application Temperature (°F) 70 to 100
Tensile Strength (psi) 25 Test Method
Aging Resistance Excellent Aging resistance Chemical Resistance Acetone, Ammonia Cleaner, Engine Oil, Gasoline, JP-4 (jet fuel), MEK, Mineral Spirits, Soapy Water Relative Solvent Resistance Chemical Resistance: Solvent resistance UV Resistance Excellent High Temperature Resistance (°C) 66, 121 Low Temperature Resistance (°C) -29
Dielectric Strength (V/mil) 20 Test Method Thermal Conductivity (W/m°K) 0.52 Test Method Surface Resistivity (O) 6e12 (ohms/sq), 1e13 (ohms/sq) Test Method
Elongation (%) 125 Test Method Shore OO Hardness 10 Test Method
Density (g/cm³) Low, 2 (lb/cu ft) Test Method
Shelf Life Details Storage: 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 4318
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.
Comparable Materials for 3M 4318
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Tensile Strength Test Methods
|Tensile Strength||Test Method|
|25 psi||ASTM D-3574, Die "A"|
Dielectric Strength Test Methods
|Dielectric Strength||Test Method|
|20 V/mil||ASTM D-149|
Surface Resistivity Test Methods
|Surface Resistivity||Test Method|
|6e12 (ohms/sq)||Non-adhesive side, ASTM D-257|
|1e13 (ohms/sq)||Adhesive side, ASTM D-257|
Thermal Conductivity Test Methods
|Thermal Conductivity||Test Method|
|0.52 W/m°K||ASTM C-518|
Elongation Test Methods
|125 %||ASTM D-3574, Die “A”|
Shore OO Hardness Test Methods
|Shore OO Hardness||Shore Hardness Test Method|
|10||ASTM D-2240, Foam with adhesive|
Density Test Methods
|2 (lb/cu ft)||ASTM D-3574, Foam with adhesive|