How to glue aluminum to rubber? To obtain a lasting bond between these two very different materials, you must use a glue capable of adhering to the metal while maintaining a certain flexibility with the rubber.
For this type of assembly, the SUPER GLUE Colle21 FLEX 21 – 10 g is particularly interesting. This flexible cyanoacrylate allows precise bonding while maintaining a certain elasticity once dry.
👉 Discover SUPER GLUE Colle21 FLEX 21 – 10 g
Why is it difficult to glue aluminum to rubber?
Aluminum is a material rigid, smooth and non-porous, while rubber can deform, vibrate or stretch.
When an adhesive becomes completely rigid, the movements of the rubber can create stresses in the bonding area.
This is why a flexible glue is particularly interesting for assembling these two materials.
However, surface preparation remains essential.
How to prepare aluminum before bonding?
Before applying the glue:
1. Clean the aluminum
Remove grease, dust and signs of handling.
2. Degrease the surface
A greasy metal surface greatly reduces adhesion.
3. Lightly sand if necessary
On very smooth aluminum, light sanding can improve grip.
4. Remove all dust
The surface must be perfectly clean before gluing.
How to prepare rubber?
The rubber must also be:
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clean;
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dry ;
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fat-free;
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without silicone or surface protection product.
Light sanding can sometimes improve adhesion on certain rubbers, but damage to the part should be avoided.
If you do not know the exact type of rubber, always carry out a test on a small area before final bonding.
How to glue rubber to aluminum?
Once the surfaces are prepared:
1. Present the two pieces without glue
Check their exact position.
2. Apply a small amount of SUPER GLUE Colle21 FLEX 21
A thin layer is usually enough.
3. Join the two surfaces immediately
4. Keep parts in contact
Avoid any movement while taking.
5. Let the bonding stabilize
Do not immediately stress the glued area.
👉 To remember:
clean → degrease → prepare → apply a little glue → assemble → maintain
Why use flexible glue?
The main advantage of a flexible glue is its ability to better support the small movements, vibrations and deformations rubber.
The SUPER GLUE Colle21 FLEX 21 is therefore particularly interesting for:
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rubber on aluminum;
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rubber on metal;
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small flexible parts;
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gaskets;
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accessories ;
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technical repairs;
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model making;
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DIY ;
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parts subject to slight vibrations.
A rigid glue may be suitable for some assemblies, but when one of the two materials remains soft, a flexible formula offers an added advantage.
Can all rubbers be glued the same way?
No.
The term rubber designates several families of materials whose composition and adhesion can be very different.
Natural rubber and some elastomers can be relatively easy to bond, while other materials, like some silicones, require specific solutions.
Before a major repair, it is therefore advisable to identify the material or carry out a preliminary test.
Mistakes to avoid
To successfully bond aluminum to rubber, avoid:
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to stick to greasy aluminum;
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applying too much glue;
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to work on wet rubber;
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to move the pieces during setting;
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to immediately request assembly;
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to assume that all types of rubber react the same way;
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to neglect a preliminary test on an unknown material.
A well-prepared surface is as important as the choice of glue.
Our customers’ opinions on SUPER GLUE COLLE21 ⭐⭐⭐⭐⭐
User satisfaction is also an important element in choosing a bonding solution.
SUPERGLUE COLLE21⭐⭐⭐⭐⭐ has more than 500 Google reviews, coming from individuals, modelers, craftsmen and professionals who use the products Colle21 for many applications.
This feedback also allows us to continue to develop a range that meets different expectations: precision, speed, transparency, viscosity, flexibility and ease of use.
If you like our service or our products, do not hesitate to leave us a reviews.
Your opinion is very important to us and helps us to improve and make our products and know-how known.
SUPER GLUE GLUE21: manufacturer of cyano glues and partner of professionals
Since 2012, SUPER GLUE GLUE21 develops and distributes a complete range of cyanoacrylate glues and professional adhesive solutions, intended for both individuals and professionals.
With more than 140 references, our range meets many applications: different viscosities of cyanoacrylates, flexible glues, gels, activators, primers and specialized bonding solutions.
👷♂️ Are you a professional or would you like to become a distributor of SUPER GLUE COLLE21?
Professionals can benefit from a dedicated catalog, of preferential rates and conditions, of a personalized support as well as the possibility of creating custom labels or in co-branding with their brand or brand.
We support many professions and sectors: bodywork, dental prosthesis, nail prosthesis, model making, DIY, repair, 3D printing, aquascaping, fishing, radio control, industry, decoration and specialized businesses.
📩 Contact us to receive our professional catalog and discover the solutions SUPER GLUE GLUE21 adapted to your activity.
FAQ – How to glue aluminum to rubber?
What glue should I use to stick rubber to aluminum?
A flexible cyanoacrylate like SUPER GLUE Colle21 FLEX 21 is particularly suitable for small assemblies requiring strong fixing while maintaining a certain flexibility.
Should you sand aluminum before gluing it?
This is not always necessary, but light sanding can improve adhesion when the surface is very smooth.
Should aluminum be degreased?
Yes. Grease and handling marks can significantly reduce adhesion.
Can all types of rubber be bonded?
No. Some rubbers and elastomers are more difficult to bond than others. A preliminary test is recommended when the composition of the material is unknown.
Why use flexible glue?
Because the rubber can deform or vibrate. A flexible glue accompanies these movements better than a completely rigid glue.
Do you need to use a lot of glue?
No. A thin, even layer is generally preferable to achieve a clean and efficient bond.
Conclusion
So, how to glue aluminum to rubber?
For a small repair or technical assembly, the SUPER GLUE Colle21 FLEX 21 constitutes a particularly interesting solution thanks to its ability to combine adhesion and flexibility.
Above all, remember:
degrease the aluminum → clean the rubber → apply a little glue → assemble → maintain → leave to stabilize
With more than 140 references, SUPER GLUE Colle21 offers different solutions to adapt the glue to the materials and constraints of each project.
Also find the products SUPER GLUE Colle21 on the SUPER GLUE official store Colle21 on Amazon.
Let's stick together with SUPER GLUE Colle21 ! 🚀