Loctite 401

LOC001

LOCTITE® 401 is a one-part, surface-insensitive instant adhesive that offers fast fixturing and high shear strength on a wide range of materials. It is suitable for difficult-to-bond substrates like PP, PE, and PTFE when used with LOCTITE® SF 770, and also works well on porous materials such as wood, paper, leather, and fabric.

Universal industrial instant adhesive
Very high-strength on close-fitting parts
Reduced hazardous ingredients for improved occupational safety
Bonds a wide range of similar or dissimilar substrates (metals, rubber, wood, cardboard, ceramics, and most plastics)
Assembles difficult-to-bond materials using LOCTITE SF 770 primer

Product Description

Loctite 401
Application Method	Dispense system, Manual
Applications	Bonding close fitting parts, Repairing
Color	Clear
Cure Type	Moisture cure
Fixture time, Steel	5.0 sec.
Gap fill	0.15 mm
Key characteristics	General purpose, Strength: high strength, Viscosity: low viscosity, fixture: very fast fixture
Operating temperature	-40.0 - 120.0 °C (-40.0 - 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)

Step 1: Preparation - Cleaning

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.

Step 2: Preparation - Priming

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.

Step 3: Preparation - Activation

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.

Step 4: Application

Apply adhesive onto one side/part.

Step 5: Assembly

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.