3M 4921

Overview

• Application Type

  • Adhesive - Bond, Hold

• 1 Part or 2 Part

  • 1 Part or 2 Part - 1 Part

• Material Form

  • Elastomer - Elastomeric Foam
  • Tape

• Substrate

  • Foam
  • Metal
  • Plastic - Elastomers, Plastics
  • Wood

• Industry

  • Industrial - Nameplates, Signs
  • Sign, Printing and Graphics - Nameplates, Signs

• Chemistry

  • Acrylic
  • Other - Elastomeric Foam

• Application Method

  • Dispenser - Application equipment

• Cure Method

  • Pressure Sensitive (min) - Pressure Sensitive

• Color

  • Other - Natural

• Key Specifications

  • TSCA (Toxic Substances Control Act) - TSCA

Specifications

Cure Specs

Application Temperature (°F)	70 to 100

Bond Strength

Shear Strength (psi)	1000 (gram), 1000 (gram), 500 (gram)	Test Method
Tensile Strength (psi)	95, 600	Test Method

Material Resistance

UV Resistance	UV resistance
High Temperature Resistance (°C)	66, 93

Conductivity

Dielectric Strength (V/mil)	400 to 500
Thermal Conductivity (W/m°K)	0.11

Hardness

Elongation (%)	800
Flexibility	Elastomeric, Firm

Other Properties

Density (g/cm³)	0.510

Business Information

Shelf Life Details	Store in original cartons at 70°F (21°C) and 50% relative humidity.;If stored under proper conditions, products retain their performance and properties for 24 months from date of manufacture. If the products have been exposed to severe weather conditions, we suggest to precondition the products at the above storage conditions for at least 24 hours before using them.
Shelf Life Temperature (°F)	70
Shelf Life Type	From date of manufacture
Shelf Life (mon)	24