Part no. (SKU/IDH):
172544
IDH Name:
LOCTITE® 4204, 20 g Tube
Instant adhesives
High temperature, high-viscosity adhesive
A 1-part, toughened and thermally resistant, high-viscosity instant adhesive for high temperature applications or where impact resistance is needed.
Part no. (SKU/IDH):
172544
IDH Name:
LOCTITE® 4204, 20 g Tube
Size Please make your selection 20 g
Packaging type Please make your selection Tube
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
- Ratings & reviews
- Question & answer
LOCTITE® 4204 is a clear, toughened and thermally resistant, high-viscosity instant adhesive. It has good impact, peel and temperature performance up to 121°C (250°F). It has a fixture time of 75 seconds and is suited for the assembly of metals, rubbers, and plastics, including difficult-to-bond plastics (PP, PE, PTFE) when used with a primer such as LOCTITE® SF 770.
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Operating temperature: -44°C to 121°C (-65°F to 250°F)
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Toughened for impact resistance
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Excellent peel, impact and sheer strength
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High viscosity for gaps up to 0.2 mm (0.008")
- Product category:
- Instant adhesives
Technologies:
-
Cyanoacrylate
- Application method, Recommended:
- Dispense system; Manual
- Applications, Recommended:
- Bonding close fitting parts
- Color:
- Ultra clear
- Fixture time, Steel:
- 120.0 sec.
- Gap fill:
- 0.2 mm
- Key characteristics:
- Flexible; Gap filling; Solvent free; Temperature resistant; Temperature: high temperature; Toughened; Viscosity: high viscosity
- Operating temperature:
- -40.0 °C - 121.0 °C (-40.0 °F - 250.0 °F)
- Shear strength, Mild Steel (grit blasted):
- 16.5 N/mm² (2400.0 psi)
- Viscosity:
- 4000.0 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.
For precise dispensing of small amounts of adhesive, the use of dispensing needles is recommended.
FAQ
Thermally resistant CAs offer higher temperature resistance (especially hot strength) compared to traditional CAs.
This is called blooming. This often occurs when there is an excessive amount of product being applied. To avoid blooming, use proper ventilation, less product, lower humidity, use a primer/accelerator, or a low bloom product.
Yes, CA’s should be stored in the refrigerator prior to opening, but DO NOT refrigerate them once they have already been opened. After opening, CA's should be used within 30 days for best performance.
All necessary H&S measures and PPE (personal protection equipment) requirements can be found on the product material safety data sheet, all of which are available via our website.
Henkel has several products available with varying levels of NSF® approval, amongst others. Please contact the Henkel sales or technical teams with your requirements.
This is a result of stress cracking. Uncured liquid CA remaining on some plastic substrate (such as polycarbonate, acrylic, and polysulfone) in a stressed condition may cause the formation of cracks in the plastic. Some remedies for avoiding/minimizing stress cracking are closing the bond joint quickly, use reinforced grades of plastic, anneal parts, or speed the cure of the CA with accelerator (or light for light curing CA products only).
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Large volume or special order?
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