For the strongest glue to use on harder plastics try Loctite Plastics Bonding System, a two-part cyanoacrylate adhesive. It’s water-resistant, sets in seconds with minimal application, and dries clear.

Gluing the Cracked Plastic. Use plastic glue to fix small cracks in plastic. If you need to reconnect a crack in plastic, you can use plastic glue, which is specially formulated to bond plastic surfaces.

For most household projects, the best glues for plastic are super glue, epoxy, or solvent cement, but the right one for you depends on the product and how much time you have. Super glue is easy to use and great for small repairs, but liquid epoxy glue can provide a stronger hold.

Use putty epoxy made for plastic to repair chunks and large pieces of missing plastic. Use the molding putty epoxy kind that you can mold by hand and use enough epoxy to cover the size of the missing piece. Once the putty is molded and activated, shape it into the missing section, and attach.

How to fix cracked plastic with adhesive

1. Gather materials. Get together all the plastic pieces you want to join.
2. Stay safe. Work in a well-ventilated, protected area.
3. Prepare surfaces.
4. Prepare adhesive and activator (if applicable).
5. Apply activator (if applicable).
6. Apply adhesive.
7. Clean-up.

Loctite Plastics Bonding System
For the strongest glue to use on harder plastics try Loctite Plastics Bonding System, a two-part cyanoacrylate adhesive. It’s water-resistant, sets in seconds with minimal application, and dries clear.

Gorilla Glue doesn’t work well on plastic. It’s an adhesive that works by creating a chemical bond using moisture, allowing it to expand into both surfaces. Since plastic isn’t permeable, the glue can’t create a strong bond between the plastic and another surface.

Loctite Plastic Bonder
For bonding materials, such as polycarbonate, acrylic, Nylon, Mylar, Delrin, phenolic, aluminum, and stainless steel, the strongest adhesive to use is Loctite Plastic Bonder. Its specialized acrylic formula combines two components to produce a strong, impact-resistant bond that sets in less than half an hour.

The PlastiFix Rigid Plastic Repair Kit is a revolutionary plastic repair system that allows you to repair cracks, fill gaps, rebuild tabs, and fix stripped threads.

PLASTEX REPAIRS THE IMPOSSIBLE. PLASTEX EASILY GLUES, FILLS GAPS, REPAIRS STRIPPED THREADS AND CAN REMAKE TABS OR SMALL PARTS IN JUST MINUTES. ONLY PLASTEX HAS A REUSABLE MOLDING BAR THAT GIVE YOU THE ABILITY TO REPAIR OR REPRODUCE ALMOST ANY PLASTIC PART QUICKLY AND EASILY.

To use this method place a small amount of powder in the included plastic cup, place a small amount of Plastex liquid in the small applicator bottle and affix the needle. Place a drop of Plastex liquid on the powder and transfer to the repair area, repeating as necessary to fill the repair.

Plastex works on most RIGID plastics and fiberglass including ABS, Polycarbonate, Acrylic, FRP, SMC, Bakelite, Composites, Carbon Fiber and even wood. Plastex is great for the shop, garage, house, office or to keep in the car or RV to use on the road.