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How to use clear adhesives?

Clear adhesives are a versatile and essential tool in any DIY enthusiast’s arsenal, offering a clean, seamless bond that’s practically invisible. One of the most popular and reliable brands in the market is Loctite, known for its high-quality clear adhesives. In this guide, we’ll walk you through how to use Loctite clear adhesives effectively to achieve the best results for your projects.


Why Choose Clear Adhesives?

Clear adhesives, like those from Loctite, are perfect for jobs where you need a bond without visible seams. Unlike opaque glues, clear glue dries transparent, making it ideal for projects where aesthetics are important. There is a wide range of clear glues available on the market, including cyanoacrylate and silicone glues. They are all designed to work on various materials, including metal, glass and ceramics; some of them are specifically formulated for certain substrates, such as polymeric plastics and other hard-to-bond surfaces. For example, Loctite 454 is a clear adhesive gel developed for challenging applications like plastics, elastomers and vertical bonding.


Preparing Your Surfaces

Before you start gluing, preparation is key. Ensure that the surfaces you plan to bond are clean and dry. Any dirt, dust, or grease can weaken the adhesive’s bond. In some cases, you might need to sand the surfaces lightly to create a better grip for the adhesive. Polyolefins and other low-energy substrates can be treated with a primer, such as Loctite SF 770, to improve the bonding properties of the glue.


Applying Loctite Clear Adhesives

When you’re ready to apply the clear glue, follow these steps:

  1. Dispense the adhesive: Carefully squeeze out the Loctite clear adhesive onto one of the surfaces. If the material is very porous, you might need to apply a layer of glue to both bonding surfaces. Don’t overdo it: too much glue can lead to messiness and result in a bond that is not “invisible”.
  2. Join the surfaces: Press the surfaces together firmly. Ensure that they are aligned correctly, as repositioning after the glue starts to set can weaken the bond. Also, cyanoacrylate adhesives have an extremely quick setting time, leaving just a short window for adjustment. Hold or clamp the surfaces together for a few seconds to allow the initial setting.
  3. Wait for full curing: It’s important to let the glue cure fully to achieve maximum strength. Loctite clear adhesives usually set within a few minutes, but full curing can take up to 24 hours. During this time, try to avoid stressing the bond to ensure it cures properly.


Tips for Best Results


  • Use in a well-ventilated area: When using clear adhesives, work in a well-ventilated area to avoid inhaling fumes.
  • Avoid skin contact: Clear adhesives can glue and irritate your skin, so it’s best to wear gloves.
  • Remove any excess glue: Acetone or dedicated products such as Loctite Glue Remover can be used to clean glue stains.
  • Store correctly: After use, make sure to cap the glue tightly and store it in a cool, dry place. Follow the storage specifications provided by the manufacturer. This will prevent the adhesive from drying out and extend its shelf life.


At Conro Electronics, we’ll show you how to improve product reliability while increasing performance and lowering costs. Our team of technical support specialists will provide your company with dependable global supply, unrivalled efficiency, and superior technical support.

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