3M 921XL

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Description for 3M 921XL

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

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

Best Practices for 3M 921XL

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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.
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.

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Technical Data

Overview

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Specifications

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Best Practices

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