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Description for 3M Single-Coated Urethane Foam Tape 4318
A conformable, grey, low-density with pressure-sensitive acrylic adhesive on one side. It will adhere to a variety of substrates, including latex-painted wood, lacquered wood, enameled steel, glass, aluminum, stainless steel,<br/>acrylic, ABS, and PVC (non-plasticized).Chemical Resistance Acetone, Chemical Resistance: Solvent resistance, Chemical Resistance: Fluid Resistance: Soapy Water Resistance, Seal out air, Ammonia Cleaner, Chemical Resistance: MEK, Engine Oil, Gasoline, JP-4 (jet fuel), Mineral Spirits Application Type Bond 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, Can be used to help cushion vibration in electronics, Aircraft lights, Can be used to help damp sound vibration in electronics, Can be used to help absorb vibration in electronics Manufacturer 3M Chemistry Acrylic adhesive Cure Method Pressure Sensitive Application Temperature (°F) 70 to 100 Color Grey Single Sided Single coated Carrier Thickness (mm) 0.076 Liner Thickness (mm) 0.080 Total Thickness (mm) 3.200 Tape Width (mm) 6 to 1,168 Silicone/Silicone Paper Liner Type: Silicone treated paper liner Aging Resistance Excellent Fungus Resistance Mildew resistance, Mold resistance High Temperature Resistance (°C) 66, 121 Low Temperature Resistance (°C) -29 Other Resistance Seal out dust Conformable Conformable Compression Set (%) 5.000 Density (g/cm³) Low, 0.032 Key Specifications Meets F.A.R requirement, Registered to ISO 9001 standards Tape Backing/Carrier Urethane -
Technical Data for 3M Single-Coated Urethane Foam Tape 4318
Overview
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Chemical Resistance
- Air Resistance - Seal out air
- Chemical Resistance : Fluid Resistance : Water Resistance - Soapy Water Resistance
- Chemical Resistance - Acetone, Ammonia Cleaner, Engine Oil, Gasoline, JP-4 (jet fuel), Mineral Spirits
- Chemical Resistance : Relative Solvent Resistance - MEK, Solvent resistance
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Application Type
- Adhesive - Bond
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1 Part or 2 Part
- 1-Part
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Material Form
- Tape - Foam Tape
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Substrate
- Glass
- Aluminum
- Steel - Enameled steel
- ABS
- Polyvinyl chloride (PVC) - PVC (non-plasticized)
- Acrylic (PMMA) - Acrylic
- Wood - Latex-painted wood, Lacquered wood
- Stainless Steel
- Other - Variety of substrates
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Industry
- Lighting - Recessed lighting seal, Aircraft lights
- Storage & Graphics - Computers
- Keyboards
- Automotive - Automotive dash boards
- Aircraft - Aircraft lights
- Electronics - Printers, Can be used to help absorb vibration in electronics, Can be used to help damp sound vibration in electronics, Can be used to help cushion vibration in electronics
- Construction Door - Door seal
- Construction Window - Window seal
- Other - Cabinet seal
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Chemistry
- Acrylic - Acrylic adhesive
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Application Method
- Contact
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Cure Method
- Pressure Sensitive (min) - Pressure Sensitive
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Color
- Gray - Grey
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Key Specifications
- UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) - Meets F.A.R requirement
- International Organization for Standardization - Registered to ISO 9001 standards
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Tape Backing/Carrier
- Other - Urethane
Specifications
Cure Specs
Application Temperature (°F) 70 to 100 Bond Strength
General Bond Strength (psi) Offers good quick stick Test Method Tensile Strength (psi) 25 (lb/in² ) Test Method Tape Properties
Single Sided Single coated Carrier Thickness (mm) 0.076 Liner Thickness (mm) 0.080 Total Thickness (mm) 3.200 Tape Width (mm) 6 to 1,168 Material Resistance
Aging Resistance Excellent Fungus Resistance Mildew resistance, Mold resistance Test Method UV Resistance Excellent High Temperature Resistance (°C) 66, 121 Test Method Low Temperature Resistance (°C) -29 Test Method Other Resistance Seal out dust Conductivity
Dielectric Strength (V/mil) 20 Test Method Thermal Conductivity (W/m°K) 0.04 Test Method Surface Resistivity (O) 6e12 (ohms/sq), 1e13 (ohms/sq) Test Method Hardness
Conformable Conformable Compression Set (%) 5.000 Test Method Elongation (%) 125 Test Method Shore OO Hardness 10 Test Method Flexibility Very soft Other Properties
Density (g/cm³) Low, 0.032 Test Method Business Information
Shelf Life Details Storage: Store in the original cartons at 60-80°F (15-27°C) and 50% relative humidity.; Shelf life is 24 months from date of manufacture. Shelf Life Temperature (°F) 140 to 176 Shelf Life Type From date of manufacture Shelf Life (mon) 24 -
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Best Practices for 3M Single-Coated Urethane Foam Tape 4318
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Surface Preparation
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.
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Application
Bond strength is dependent upon the amount of adhesive-to-surface contact. Firm application pressure develops better adhesive contact and helps improve bond strength.
Ideal tape application temperature range is 70°F to 100°F (21°C to 38°C). 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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Comparable Materials for 3M Single-Coated Urethane Foam Tape 4318
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General Bond Strength Test Methods
General Bond Strength | Cure Time |
---|---|
Offers good quick stick | 20 min |
Tensile Strength Test Methods
Tensile Strength | Test Method |
---|---|
25 (lb/in² ) | ASTM D 3574, Die "A" |
High Temperature Resistance Test Methods
High Temperature Resistance | Test Method |
---|---|
66°C | Long term (day, weeks) |
121°C | Short term temperature resistance |
Low Temperature Resistance Test Methods
Low Temperature Resistance | Test Method |
---|---|
-29°C | Cold flex, No cracks. Tape slowly bent around a 1/4 in. diameter mandrel. |
Fungus Resistance Test Methods
Fungus Resistance | Test Method |
---|---|
Mildew resistance | No growth after 28 days, ASTM G21, Foam with adhesive |
Mold resistance | No growth after 28 days, ASTM G21, Foam with adhesive |
Dielectric Strength Test Methods
Dielectric Strength | Test Method |
---|---|
20 V/mil | ASTM D-149 |
Thermal Conductivity Test Methods
Thermal Conductivity | Test Method |
---|---|
0.04 W/m°K | ASTM C-518 |
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 |
Elongation Test Methods
Elongation | Test Method |
---|---|
125 % | ASTM D-3574, Die “A” |
Shore OO Hardness Test Methods
Shore OO Hardness | Shore Hardness Test Method |
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10 | ASTM D 2240, Foam with adhesive |
Compression Set Test Methods
Compression Set | Test Method |
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5.000 % | ASTM D1667 |
Density Test Methods
Density | Test Method |
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Low | |
0.032 g/cm³ | ASTM D-3574, Foam with adhesive |

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