3M 666

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Description for 3M 666

Double coated tape that is ideal for applications where one or both parts need to be repositioned or removed easily.

Application Type	Bond, Removable/changeable foam gasketing
1 Part or 2 Part	1 Part
Material Form	Double coated Tape
Substrate	Paper, Plastic, Steel
Industry	Foils, Point of purchase displays
Manufacturer	3M
Chemistry	Plastic
Cure Method	Pressure Sensitive
Color	Clear
Relative Solvent Resistance	Chemical Resistance: Good
High Temperature Resistance (°C)	52

Best Practices for 3M 666

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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 or heptane.

Note: Carefully read and follow the manufacturer's 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. An exception is 3M™ Repositionable Tapes 9425 and 9425HT which can be applied at temperature as low as 32°F (0°C).

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Technical Data

Overview

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Specifications

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Best Practices

*See Terms of Use Below
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Comparable Materials

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Peel Strength Test Methods

Peel Strength	Type	Substrate	Test Method
23 (oz./in.)	180° Peel Strength	Steel	ASTM D3330, Faceside
25 (oz./in.)	180° Peel Strength	Steel	ASTM D3330, Backside

3M 666

Description for 3M 666

Best Practices for 3M 666

Surface Preparation