Henkel LOCTITE EA E-20NS Non-Sag Epoxy Adhesive for Structural Bonding

LOCTITE EA E-20NS Non-Sag Epoxy Adhesive Performance

The product uses an epoxy resin and amine hardener mixed at a 2:1 ratio by volume or 100:48 by weight. The resin has a published viscosity of approximately 80,000 to 280,000 mPa·s, while the hardener is approximately 30,000 to 90,000 mPa·s at 25°C under the specified Brookfield conditions. After mixing, the material has a typical specific gravity of about 1.43 and a working life of approximately 20 minutes, providing useful time for dispensing, positioning, and fixture preparation.

LOCTITE EA E-20NS Non-Sag Epoxy Adhesive cures at ambient temperature and can reach high strength after approximately 24 hours at 25°C. Moderate heating up to 93°C can accelerate the curing process. Henkel recommends maintaining contact pressure and controlling the bond line between approximately 0.1 and 0.2 mm for maximum shear strength. Larger mixed quantities and warmer conditions shorten the available working time, so production teams should qualify the complete process using representative assemblies.

Multi-Substrate Structural Bonding Applications

Typical applications include bonding aluminum brackets, stainless-steel parts, machinery housings, glass panels, ceramic components, rigid plastic assemblies, electrical enclosures, wooden fixtures, composite structures, and equipment parts. The non-sag paste is particularly useful on vertical joints, overhead repairs, edge bonding, gap filling, and applications where a liquid epoxy could flow away before curing.

Published five-day lap-shear results include approximately 19.2 MPa on grit-blasted steel, 17.3 MPa on prepared aluminum, 13.2 MPa on polycarbonate, and 9.9 MPa on fir wood. Block-shear data include approximately 11.2 MPa on ABS, 8.9 MPa on PVC, 22.9 MPa on epoxy, and 9.3 MPa on glass. These figures are laboratory references; actual performance depends on substrate grade, preparation, joint geometry, cure conditions, and service exposure.

7 Benefits of LOCTITE EA E-20NS Non-Sag Epoxy Adhesive

• Non-sag application: Stays positioned on vertical, overhead, and irregular bonding surfaces.
• Tough structural bond: Provides high shear strength and strong resistance to peel loading.
• Broad substrate range: Bonds compatible metals, glass, ceramics, plastics, epoxy, and wood.
• Room-temperature cure: Reduces dependence on mandatory heat-curing equipment.
• Electrical insulation: Offers published dielectric breakdown strength of approximately 24 kV/mm.
• Chemical resistance: Withstands many oils, fuels, solvents, water, and glycol mixtures after curing.
• Controlled 2:1 mixing: Supports accurate dispensing from the 50 ml dual cartridge.

Applying LOCTITE EA E-20NS Non-Sag Epoxy Adhesive

Remove paint, oxide, oil, dust, mold-release agents, moisture, and loose contamination from both bonding surfaces. Insert the dual cartridge into a compatible applicator, dispense a small amount to confirm equal flow, attach the correct static mixer, and discard the initial output. For manual mixing, blend both components thoroughly and continue mixing for approximately 15 seconds after a uniform color is achieved.

Apply the adhesive evenly to both prepared surfaces, assemble the parts within 20 minutes, and prevent movement during curing. Contact pressure is required, but excessive clamping should not squeeze all adhesive from the joint. Uncured residue may be removed with a compatible ketone-type solvent after confirming substrate compatibility. Store unopened product in a dry location, ideally between 8°C and 21°C.

Official Resources and Related Structural Adhesives

Review the official Henkel LOCTITE EA E-20NS product page and the official LOCTITE EA E-20NS technical data sheet for current technical properties, processing instructions, safety documentation, and regional availability.

Explore our non-sag epoxy adhesives for additional vertical and overhead bonding products. Browse our two-part structural adhesives for metal, glass, ceramic, plastic, composite, and wood assembly. Contact our sales team for quotations, 50 ml cartridge availability, mixing nozzles, applicators, technical documents, bulk quantities, and export support.