3M 921XL

3M 921XL Datasheet
CONTACT REP

  • Description for 3M 921XL

    Tape has a liner that extends beyond the width of the adhesive to provide easy liner starting and removal.

    *See Terms of Use Below

    Application Type Bond, Mounting, joining
    1 Part or 2 Part 1 Part
    Material Form Extended Liner Tapes
    Substrate Steel
    Manufacturer 3M
    Chemistry Acrylic
    Cure Method Pressure Sensitive
    Color Clear
    Relative Solvent Resistance Chemical Resistance: Low
    High Temperature Resistance (°C) 65, 93

  • Technical Data for 3M 921XL

    *See Terms of Use Below

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Tape - Extended Liner Tapes
    • Substrate
    • Industry
      • Industrial
      • Other - ideal for mounting and joining materials where repositionability may be desired.
    • Chemistry
    • Cure Method
      • Pressure Sensitive (min) - Pressure Sensitive
    • Color
      • Clear / Transparent - Clear
    Specifications
    Cure Specs
    Application Temperature (°F) 70 to 100
    Bond Strength
    General Bond Strength (psi) 20 (oz./in.) Test Method
    Material Resistance
    UV Resistance Excellent
    High Temperature Resistance (°C) 65, 93
    Business Information
    Shelf Life Details 18 (months) from date of manufacture when stored in original cartons at 70°F (21°C) and 50% relative humidity.
    Shelf Life Temperature (°F) 70
    Shelf Life Type From date of manufacture
    Shelf Life (mon) 18

  • Best Practices for 3M 921XL

    *See Terms of Use Below

    1. Surface Preparation

      To obtain optimum adhesion, the bonding surfaces must be clean, dry, and well unified. Some typical surface cleaning solvents are isopropyl alcohol and heptane.

      Note: Be sure to follow manufacturer’s safety precautions and directions for use when using solvents.

    2. Application

      Bond strength is dependent upon the amount of adhesive-to-surface contact developed. Firm application pressure helps develop better adhesive contact and 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 921XL

    *See Terms of Use Below

    Spec Engine® Results

    • 3M
      4646(3M)

      Dark gray, closed-cell acrylic foam carrier • High temperature resistance• Apply as low as 50°F (10°C) • UL 746C

    • 3M
      4951(3M)

      White, closed-cell acrylic foam carrier • Apply as low as 32°F (0°C)

    • 3M
      4932(3M)

      White, closed-cell acrylic foam carrier • Good adhesion to polypropylene and many powder paints• Apply as low as 50°F (10°C)

    • Compare All
  Download Technical Data Sheet   Save This Material Saved Items

Questions about this material?

3M - 921XL

Get personal assistance with your specific application needs.

Your Profile Edit
Submit

Popular Articles

What Projects Require Custom Adhesive Formulations and Why?

Read Article

Testing the effectiveness of surface treatments

Read Article

An Overview of Fluid Dispensing Systems & How They’re Used

Read Article

Infographic: ENSURING A STRONG BOND - 6 Basic Methods of Surface Preparation

Read Article

Sponsored Articles

Unique Advantages of Contact Adhesives

Read Article

Using LOCTITE® 454™ is a Valid Option for Engineers Working with a Wide Variety of Materials

Read Article

Sylgard 184 by DOW is the Top Choice for a Transparent, Silicone Encapsulant. Read Why:

Read Article

Case Study: Creating reliable, corrosion-free bonds with LORD® 406 acrylic adhesive

Read Article
Information provided by Gluespec

Why Register?

  • View Technical Details
  • View Test Methods
  • View Key Specifications
  • View Similar Materials
  • Save your Project Searches

Already registered? Sign in.

Questions? Learn more about Gluespec

Gluespec Poll

What level of expertise do you have in specialty chemicals like adhesives, sealants, conformal coatings, etc.?
General Bond Strength Test Methods
General Bond Strength Substrate Test Method
20 (oz./in.) Steel ASTM D3330
;