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BETASEAL® 1766 EU is a high viscosity, high modulus, glass bonding adhesive that can be used primerless to paint and glass. Due to its chemistry, it delivers a high initial handling strength to hold the position of the bonded parts. It is a one component, ambient moisture curing, solvent free adhesive for direct glazing applications. It shows excellent sag and bead stability. Skin formation and curing are dependent on humidity, temperature and application dimension.
Ready to Use Product Type: Structural Adhesive & Sealant, 1K (1 component) Adhesive & Sealant, Solvent free (100% Solids) Adhesive & Sealant
Compatible Substrates & Surfaces: Glass, Coated & Painted Surfaces
Application Method: Pneumatic Gun
Chemical Family: Polyurethanes (PU)
Cure Method: Moisture Cure
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Identification & Functionality

BETASEAL® 1766 EU Features & Benefits

Applications & Uses


Compatible Substrates & Surfaces
Polyurethane prepolymers
Physical Properties
ValueUnitsTest Method / Conditions
Viscosity (Ballan at 23°C, 4mm/4bar)8 - 20g/min-
Typical Properties
ValueUnitsTest Method / Conditions
Density1240 - 1280kg/m³ISO 845
Solid Content≥98%-
Cured Properties
ValueUnitsTest Method / Conditions
Stress at Break7MPaDIN 53504
Strain at Break200%DIN 53504
Shear Modulus1.7 - 2.7MPa-
Lap Shear Strength (3 days)≥3MPaDIN EN 1465
Lap Shear Strength (7 days)≥5MPaDIN EN 1465
Shore A Hardness65 - 75-DIN 53505
Hardness65 - 75Shore ADIN 53505
Temperature Stability-40 - 100°C-
Volume Resistivity1E8Ohm*cm-
Uncured Properties
ValueUnitsTest Method / Conditions
Skinning Time10 - 30min-
Cure Rate (after 48h)≥3mm-
Adhesive Processing Information
ValueUnitsTest Method / Conditions
Processing Temperature23 - 60°C-

Technical Details & Test Data

Additional Information


Bonding Surface Preperation

All bonding surfaces must be free of dirt, dust, water, oil and grease.

Application Equipment

Cartridges: Application with a standard 1-component pneumatic or electrical gun with piston bar (no direct air guns!).

Drums, Pails: Robotic pump system.


Uncured adhesive residues can easily be removed with BETACLEAN® 3500. Hardened adhesive residues can only be removed mechanically. Immerse equipment in BETACLEAN® 3000.

Packaging & Availability

Storage & Handling

Shelf Life
6 months

Most Viewed Documents

Document Name
BETASEAL® 1766 EU Technical Data Sheet
Technical Data Sheet
Technical Data Sheet
Products: BETASEAL® 1766 EU