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
- Adhesive - Bond, Mounting, joining
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
- Tape - Extended Liner Tapes
- Other - ideal for mounting and joining materials where repositionability may be desired.
- Pressure Sensitive (min) - Pressure Sensitive
- Clear / Transparent - Clear
Application Temperature (°F) 70 to 100
General Bond Strength (psi) 20 (oz./in.) Test Method
UV Resistance Excellent High Temperature Resistance (°C) 65, 93
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
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.
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
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