3M 4318

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Description for 3M 4318

Adhere to a variety of substrates, including latex-painted wood, lacquered wood, enameled steel, glass, aluminum, stainless steel, acrylic, ABS, and PVC (non-plasticized) as tape adhesion is typically satisfactory within 20 minutes and continues to build with additional time.

*See Terms of Use Below

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

Best Practices for 3M 4318

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Technical Data for 3M 4318

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Overview

Application Type
- Adhesive - Bond
- Sealant - Seal
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
Material Form
- Tape - Foam Tape
Substrate
- Glass
- Aluminum
- Steel - Enameled steel
- Plastic - ABS
- Polyvinyl chloride (PVC) - PVC (non-plasticized)
- Acrylic (PMMA) - Acrylic
- Wood - Latex-painted wood, Lacquered wood
- Stainless Steel
- Other - Variety of substrates
Industry
- Lighting - Recessed lighting seal, Aircraft lights
- Automotive - Automotive dash boards
- Aircraft - Aircraft lights
- Electronics - Printers
- Storage & Graphics - Computers
- Keyboards
- Industrial
- Construction Door - Door seal
- Construction Window - Window seal
- Other - Cabinet seal
Chemistry
- Acrylic
- Polyurethane - Urethane
Application Method
- Contact
Cure Method
- Pressure Sensitive (min) - Pressure Sensitive
Color
- Gray - Charcoal grey
Key Specifications
- UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) - Meets F.A.R requirement

Specifications

Cure Specs

Application Temperature (°F)	70 to 100

Bond Strength

Tensile Strength (psi)	25	Test Method

Material Resistance

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

Conductivity

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

Hardness

Elongation (%)	125	Test Method
Shore OO Hardness	10	Test Method

Other Properties

Density (g/cm³)	Low, 2 (lb/cu ft)	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 Temperature (°F)	140 to 176
Shelf Life Type	From date of manufacture
Shelf Life (mon)	18

Best Practices for 3M 4318

*See Terms of Use Below
1. 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.
2. 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.
  
  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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Spec Engine^® Results
- Single-Coated Urethane Foam Tape 4314(3M)
  A conformable, grey, low-density, opencell foam with pressure sensitive acrylic adhesive on one side.
- 4718(3M)
  Adhere to a variety of substrates, including latex-painted wood, lacquered wood, enameled steel, glass, aluminum, stainless steel, acrylic, ABS, and PVC (non-plasticized) as tape adhesion is typically satisfactory within 20 minutes and continues to build with additional time.
- 4104(3M)
  Adhere to a variety of substrates, including latex-painted wood, lacquered wood, enameled steel, glass, aluminum, stainless steel, acrylic, ABS, and PVC (non-plasticized) as tape adhesion is typically satisfactory within 20 minutes and continues to build with additional time.
- Compare All