Instant adhesives
Your go-to fast-fixturing adhesive
A 1-part, surface-insensitive, fast-fixturing instant adhesive that provides high shear strength on a wide range of materials, including difficult-to-bond substrates.
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All marks used are trademarks and/or registered trademarks of Henkel and its affiliates in the US, Germany, and elsewhere.
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- Description
- Technical specification
LOCTITE® 401 is a fast-fixturing instant adhesive designed for the assembly of a wide range of materials where uniform stress distribution and high tensile and/or shear strength are required. Using primer LOCTITE® SF 770, the assembly of difficult-to-bond (PP, PE, PTFE) materials is possible. In addition, it is suited for bonding porous materials such as wood, paper, leather and fabric.
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Universal industrial instant adhesive
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Very high-strength on close-fitting parts
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Reduced hazardous ingredients for improved occupational safety
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Bonds a wide range of similar or dissimilar substrates (metals, rubber, wood, cardboard, ceramics, and most plastics)
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Assembles difficult-to-bond materials using LOCTITE SF 770 primer
- Product category:
- Instant adhesives
Technologies:
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Cyanoacrylate
- Application method:
- Dispense system; Manual
- Applications:
- Bonding close fitting parts; Repairing
- Color:
- Clear
- Cure type:
- Moisture cure
- Fixture time, Steel:
- 5.0 s
- Gap fill:
- 0.15 mm
- Key characteristics:
- General purpose; Strength: high strength; Viscosity: low viscosity; fixture: very fast fixture
- Operating temperature:
- -40.0 °C - 120.0 °C (-40.0 °F - 250.0 °F)
- Physical form:
- Liquid
- Recommended for use with:
- Elastomer; Metal; Plastic; Porous surface
- Shear strength, Mild Steel (grit blasted):
- 20.0 N/mm² (2900.0 psi)
- Viscosity:
- 100.0 mPa·s (cP)
How to use
It is recommended to use the correct LOCTITE® cleaner for the surface to be bonded (such as LOCTITE® SF 7070™) to degrease and clean surfaces prior to applying the adhesive.
To improve adhesion on difficult to bond plastic surfaces, apply LOCTITE® SF 770™ to the bond area by brushing or dipping. Avoid applying excess primer. Allow the primer to dry.
If cure speed is too slow, use activator LOCTITE® SF 7452™ or LOCTITE® SF 7455™ (see cure speed vs activator graph in TDS). Apply activator to one bond surface by spray, brush or dipping (not primed surfaces). Allow the activator to dry.
Apply adhesive onto one side/part.
Assemble parts immediately. The parts should be accurately located as the short fixture time leaves little opportunity for adjustment. Bond should be held or clamped until the adhesive has fixtured.
Hint: if necessary, excess product can be cured by activator LOCTITE® SF 7452™. Spray or drop activator onto excess product.
Every question, request, and challenge is an opportunity for us to help your business perform. And we have all the right people ready to make it happen.
Check our FAQ for quick answers or reach out via phone to our support center. Here, we also offer additional inquiry forms to help you connect with the appropriate Henkel expert.