UV Peelable Hole Plugging Adhesive Thixotropic Chemical Resistant for Metal Screw Hole Protection 3769E

Product Overview

UV Peelable Hole Plugging Adhesive 

3769E is a blue-transparent, solvent-free UV-curable peelable hole plugging adhesive designed for temporary protection of metal screw holes. It offers fast curing, high thixotropy for precise shape retention, and excellent chemical resistance, protecting internal threads from chemical attack and contamination during surface treatment. After processing, the plug peels out easily with no residue, leaving the threads clean and fully functional.

Key Features

• Fast curing, solvent-free - quick UV cure at 1000 mJ/cm² with a 100% solvent-free formulation
• High thixotropy, excellent shape retention - the adhesive stays precisely in place after dispensing, ideal for filling and plugging holes
• Easy to peel, no residue - the cured plug is removed cleanly without leaving residue inside the threads
• Excellent chemical resistance - protects screw holes from chemicals during surface treatment and finishing processes
• Metal screw hole protection - specially developed for temporary protection of metal screw and threaded holes
• Clear visual inspection - blue-transparent color makes plug coverage easy to verify

Technical Specifications

Product Applications

3769E is specially developed for temporary protection of metal screw holes and threaded holes. Typical applications include:

• Metal screw hole plugging - fills and plugs screw holes and threaded holes to keep threads clean and protected during processing
• Surface treatment protection - shields internal threads from chemicals during processes such as anodizing, electroplating, painting, coating and chemical cleaning
• Chemical resistance - the cured plug withstands process chemicals without degrading, protecting the hole area from attack
• Precise dispensing - high thixotropy keeps the plug in place with good shape retention until UV curing
• Clean removal - after processing, the plug peels out easily with no residue, keeping the threads clean and reusable
• Solvent-free operation - safe for workshop environments and sensitive assemblies

Frequently Asked Questions

1. What is 3769E mainly used for?
   It is a peelable hole plugging adhesive for temporary protection of metal screw holes and threaded holes during surface treatment and finishing. After processing, the plug is peeled out easily without residue.
2. Why is high thixotropy important for this product?
   High thixotropy provides excellent shape retention, so the adhesive stays precisely in place after dispensing to fully fill and plug the hole without flowing out before curing.
3. How does 3769E protect against chemicals?
   The cured plug offers excellent chemical resistance, protecting internal threads from attack by chemicals used in surface treatment processes, then peels off cleanly afterwards.
4. Does 3769E leave residue after peeling?
   No. The cured plug is removed easily and cleanly, leaving no residue inside the screw hole so the threads remain clean and functional.
5. Is 3769E solvent-free?
   Yes. 3769E adopts a 100% solvent-free formulation, curing fast under UV energy of about 1000 mJ/cm² while meeting environmental and workplace safety requirements.
6. How should 3769E be stored and what is its shelf life?
   Keep the container sealed and store at 8-28°C in a cool, dry place away from direct sunlight and UV sources. Under proper storage conditions, the shelf life is 12 months. Available in 30g and 50g packages.

Packaging & Storage

Available in 30g and 50g packages. Store in a sealed container at 8-28°C, away from direct sunlight and UV exposure. Shelf life: 12 months.