3M 4991 is a gray, 0.090 in (2.3 mm), multi-purpose acrylic adhesive with a conformable, foam core.
It can replace rivets, welds, and screws. The fast and easy-to-use permanent bonding method provides high strength and long-term durability.
It offers design flexibility with its viscoelasticity and powerful ability to bond to a variety of surfaces.
|3M 4991 TDS|
|Adhesive Type||Plasticiser Resistant|
|Thickness (ASTM D-3652)||2.3 mm|
|Foam Density||720 kg/m³|
|Adhesive Carrier||Acrylic Foam (Closed Cell)|
|Liner||Red Polyethylene Film|
|Shelf Life||24 months from date of manufacture when stored in the
original carton at 20°C & 50 % Relative Humidity
|Peel Adhesion to|
|Static Shear Strength|
|1000 g @ 22°C
500 g @ 66°C
500 g @ 93°C
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