Features and Benefits

Formulated for demanding flexible bondlines, this low viscosity instant adhesive is ideal for applications in disposable medical device assemblies.
LOCTITE® 4902 is a higly flexible, low viscosity, instant adhesive. This formula offers significant performance enhancements, including increased strength in flexing bond lines and resistance to leaks with excellent sealing capability. It offers fixture times of 20 seconds and is well suited for the assembly of metals, elastomers and plastics, including difficult-to-bond materials (PP, PE, PTFE) when used with a primer such as LOCTITE SF 7701. LOCTITE 4902 is tested to Henkel's ISO 10993 protocols for use in disposable medical devices.
  • High strength in flexing bond lines
  • Excellent sealing capability to prevent fluid leakages
  • Low viscosity
  • Tested to Henkel's ISO-10993 biocompatibility protocols
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Documents and Downloads

Safety Data Sheets and RoHs
LOCTITE® 4902, 20 g Bottle 1875841 en-US
IDH: 1875841
EAN: 079340005198

Size Case: 20 g Bottle

Quantity: 10.0/case

LOCTITE® 4902, 1 lb Bottle 1875842 en-US
IDH: 1875842
EAN: 079340005181

Size Case: 1 lb Bottle

Quantity: 10.0/case

No documents found

Technical Information

Color Clear
Fixture time, Steel 20.0 sec.
Gap fill 0.12 mm
Key characteristics Flexible
Operating temperature -40.0 - 82.0 °C (-40.0 - 180.0 °F )
Shear strength, Mild Steel (grit blasted) 10.5 N/mm² (1500.0 psi )
Viscosity 200.0 mPa·s (cP)

How to

Step by Step Guide

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.

2. Preparation - Priming

To improve adhesion on difficult to bond plastic surfaces, apply LOCTITE® SF 7701™ to the bond area by brushing or dipping. Avoid applying excess primer. Allow the primer to dry.

3. Preparation - Activation

If cure speed is too slow, use activator LOCTITE® SF 713™ (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.

4. Application

Apply adhesive onto one side/part.

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 713™. Spray or drop activator onto excess product.

Frequently Asked Questions