3M 8988

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Description for 3M 8988

A high-performance, packaging tape reinforced with continuous glass yarn filaments, which give the tape very high tensile strength.

*See Terms of Use Below

Application Type	Bond, Seal
1 Part or 2 Part	1 Part
Material Form	Filament Tape
Substrate	Steel
Manufacturer	3M
Chemistry	Synthetic rubber resin
Cure Method	Pressure Sensitive
Color	Clear

Best Practices for 3M 8988

*See Terms of Use Below

Surface Preparation

Substrate surfaces should be clean and dry prior to tape application. Isopropyl alcohol (isopropanol) applied with a lint-free wipe or swab should be adequate for removing surface contamination such as dust or finger prints. Do not use “denatured alcohol” or glass cleaners which often contain oily components. Allow the surface to dry for several minutes before applying the tape. More aggressive solvents (such as acetone, methyl ethyl ketone (MEK) or toluene) may be required to remove heavier contamination (grease, machine oils, solder flux, etc.) but should be followed by a final isopropanol wipe as described above.

Note: Be sure to read and follow the manufacturers’ precautions and directions when using primers and solvents.
Application

Apply the tape to one substrate at a modest angle with the use of a squeegee, rubber roller or finger pressure to help reduce the potential for air entrapment under the tape during its application. The liner can be removed after positioning the tape onto the first substrate.

Assemble the part by applying compression to the substrates to ensure a good wetting of the substrate surfaces with the tape. Proper application of pressure (amount of pressure, time applied, temperature applied) will depend upon design of the parts. Rigid substrates are more difficult to bond without air entrapment as most rigid parts are not flat. Use of a thicker tape may result in increased wetting of rigid substrates. Flexible substrates can be bonded to rigid or flexible parts with much less concern about air entrapment because one of the flexible substrates can conform to the other substrate.

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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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Tensile Strength Test Methods

Tensile Strength	Test Method
Very High
380 (lbs./in.)	ASTM D-3759, width (6655 N/100 mm width)

General Bond Strength Test Methods

General Bond Strength	Substrate	Test Method
75 (oz./in.)	Steel	ASTM D-3330, width (82 N/100 mm width)
Exceptional initial adhesion
Good holding with minimum amount of tape
Holds instantly with minimum rubdown

Elongation Test Methods

Elongation	Test Method
3 %	ASTM D-3759 (at Break)

3M 8988

Description for 3M 8988

Best Practices for 3M 8988

Surface Preparation