Would it work on gluing back rubber pads on the nose bridge of plastic frame sunglasses?

Yes, This glue will be effective in gluing pads onto sunglasses frames. If they are metal, you'd be best off scuffing the metal with sandpaper to ensure adhesion; for plastic this won't be a problem.

do you need to use a primer?, can I use it fix my cracked kicking fin for swimming (silicone/rubber), need to be a strong bond

No. I used it on my tennis shoes. I just cleaned the area with alcohol.

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Scotch-Weld Plastic & Rubber Instant Adhesive PR40, Clear, 20 Gram Bottle

Product ID: 399137908

Details

Brand
3M
Specific Uses For Product
Repair
Material
Rubber
Item Form
Gel
Special Feature
Strong

⚡Fast curing under 1 min

🔬Low viscosity for precision

🛠️Bonds plastics & rubbers strongly

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Description

🧩 Stick with the best — bond smarter, not harder!

DURABILITY THAT LASTS - Strong, water-resistant bond built to endure
UNIVERSAL BONDING POWER - Reliable adhesion on tough plastics and rubbers like EPDM & nylon
FAST TRACK YOUR PROJECTS - Cures rapidly to keep your workflow seamless
INDUSTRIAL GRADE PERFORMANCE - Trusted by pros for demanding repair and assembly tasks
PRECISION DROP OR STEADY BEAD - Pinch or squeeze for exact application every time

3M Scotch-Weld PR40 is a clear, low-viscosity instant adhesive designed for industrial use, delivering fast curing and strong, durable bonds on challenging plastics and rubbers. Its precision application and water resistance make it ideal for professional repairs and manufacturing, ensuring projects move quickly without compromising strength.

Specifications

ASIN	B072Q9DBB5
Best Sellers Rank	#75,514 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,125 in Universal Adhesives
Brand	3M
Brand Name	3M
Colour	Clear
Compatible Material	Plastic, Rubber
Container Type	Bottle
Country of Publication	USA
Customer Reviews	4.5 out of 5 stars 2,120 Reviews
Full Cure Time	24 Hours
Global Trade Identification Number	00051115252044
Included Components	Instant Adhesive
Item Form	Gel
Item Package Quantity	1
Item Weight	0.02 Kilograms
Manufacturer	3M Industrial Market Center
Material	Rubber
Material Type	Rubber
Model	25204
Other Special Features of the Product	Strong
Special Feature	Strong
Specific Uses For Product	Repair
UPC	051115252044
Viscosity	Low viscosity
Volume	0.68 Fluid Ounces
Water Resistance Level	Water Resistant

Reviews

G**D

Very impressive rubber bonding great for diy seals/gaskets

4.03.2026

R**D

Great for making o-rings

24.07.2025

R**N

Buen producto.

Funcional.

5.10.2024

M**A

Muy bueno

Cumplió muy bien para pegar plástico en auto de lujo

22.06.2024

J**E

Great product

1.01.2025

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 103.76

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