10 Strongest Epoxy for Plastic to Metal 2022

What’s the strongest epoxy for plastic to metal? What is the strongest adhesive for metal to plastic? What is the strongest glue for metal to plastic?

The strongest epoxy for plastic to metal plays a key role in bonding, protecting, and sealing metal to plastic joints. Whether you are pulling out metalwork stunts over plastic chunks or you want to attach plastic to metal, these epoxy allow you to get a firm, unshakeable long-lasting bond.

With the wide range of adhesive products in the market and their many custom uses, it can be difficult and confusing to carefully select epoxy to suit your specific needs. Therefore, we have refined to you a well-researched and filtered article to bring you 60 hours of search on the web through this short piece.

Strongest Epoxy for Plastic to Metal – Reviews

1. [BEST OVERALL]J-B Weld 8281 Professional Steel Reinforced Epoxy

Highlighted Pros

Extensively Versatile

Extremely durable

5020 PSI high tensile strength

550 ℉ (287℃) High Thermal Resistance

Simple 1:1 Mixing Ratio

Sufficient 15-24h cure time


X Too long 4 to 6 hours setting time

J-B Weld 8281 Professional is the strongest epoxy for plastic to metal.

J-B Weld 8281 Professional is not only compatible with wood and plastic but also Wood, Fiberglass, Ceramic, and Concrete.

J-B Weld 8281 Professional is extremely durable and hardens to a substance stronger than steel since it was designed to replace welding. J-B Weld 8281 Professional is therefore perfect for heavy-duty hardware repairs including marine, automotive, craft repair, and many more uses.

J-B Weld 8281 Professional has a 5020 high tensile strength making it unbreakable by the pressure and impact limitations of everyday use. You can make superiorly adorable repairs that can be sanded, drilled, or painted.

J-B Weld 8281 Professional is highly thermal resistant withstanding up to 550 degrees Fahrenheit (287 degrees Celsius).

J-B Weld 8281 Professional features a simple 1:1 mixing ratio that is friendly to beginners and takes 4 to 6 hours to set which is sufficient enough to allow repositioning of the metal to plastic project components.

J-B Weld 8281 Professional only takes 15-24 hours to cure to a dark gray tint making the project ready for consumption the following day.

2. NBHK Epoxy Glue 0.85 Fluid Ounce


Highlighted Pros

Fully compatible with metal and plastic

Rapid action epoxy

100% waterproof



High strength and durable


X Hard-to-cut syringe dispenser tips

NBHK Epoxy Glue has a 3-5 minutes rapid working time to allow you to work on projects which are intermediary to bigger projects. NBHK Epoxy Glue has a full cure time of 24 hours which gives it enough time to form a long-lasting adhesive.

NBHK Epoxy Glue is 100% waterproof making it ideal for wood repairs, marine situations, and outdoor refurbishments.

NBHK Epoxy Glue is sandable and paintable after a full cure which gives chance to hobbyists to add color, patterns, or texture to plastic or metal surfaces.

NBHK Epoxy Glue is a high-strength and durable adhesive whose repairs last a long time. NBHK Epoxy Glue cures to a hard substance resisting damage by UV, water, thermals, pressure, and chemicals.

NBHK Epoxy Glue is extensively versatile not only being compatible with plastic and metal but also fiberglass, wood, and ceramic. Also, from filling voids, performing repairs, and joining plastic and metallic pieces, NBHK Epoxy Glue fits in many DIY projects.

NBHK Epoxy Glue is eco-friendly and has been sustainably produced and the packaging is recyclable.

NBHK Epoxy Glue is easy to use, only requiring a slight squeeze to conveniently dispense the desired epoxy volume into your metal to plastic project.

3. Loctite Epoxy Instant Mix General Purpose


Highlighted pros

Extensively versatile

Low shrinkage factor High 3020 PSI strength

100% waterproof

Self-mixing syringe

Pigment compatible

5 minutes rapid setting time


X Ineffective applicator design

Loctite Epoxy Instant Mix is a strong epoxy not only compatible with metal and plastic but also Wood, Fiberglass, Glass, Ceramic, Concrete, and Stone. This compatibility extends the versatility of Loctite Epoxy Instant Mix making it applicable in gap bonding, surface repairs, and metal to plastic lamination.

Loctite Epoxy Instant Mix is an easy-to-use epoxy with both a self-mixing syringe dispenser and a highly precise application and is therefore ideal for small miniature projects.

Loctite Epoxy Instant Mix is 100% waterproof and is ideal for marine repairs. Loctite Epoxy Instant Mix is sandable and paintable after full cure.

Loctite Epoxy Instant Mix has a low shrinkage factor making it ideal for filling voids since it won’t require overspill to compensate for a huge shrinkage factor.

Loctite Epoxy Instant Mix is compatible with various pigments including earth pigments, cement, or sand to produce color variations that bring interest in repairs or joints.

Loctite Epoxy Instant Mix has a high 3200 PSI tensile strength which is res mobile for creating a hard substance like metal and hard plastic to withstand pressure, impact, corrosion, and abrasion that plastic and metal would normally undergo in the home, kitchen or workshop.

4. PC-AutoBond Epoxy Adhesive Paste


Highlighted Pros

Tough and Flexible epoxy

-20 to 250 degrees F service temperature

8-minute quick epoxy setting

Adequate 15-24h cure time

100% water resistant


X Only comes in a black shade

PC AutoBond forms a tough and flexible bond that is perfect for impact and vibration resistance. PC AutoBond is therefore perfect for repairs on automotive, tractors, music systems, swinging systems, and drills.

PC AutoBond has a wide service temperature range of between -20 to 250 degrees F enabling it to hold metal to plastic for a long time all year round regardless of the season.

PC AutoBond has a rapid work time of 8 minutes which allows quick bonding that quickens the completion of the overall project. The full cure time is between 15 to 24h making the application ready for full functional use by the next day.

PC AutoBond is a 100% water-resistant tough bond capable of resisting acids, chemicals, and common solvents.

PC AutoBond is extensively versatile bonding to several other materials apart from metal and plastic including wood, glass, and fiberglass.

5. PC-7 Epoxy Adhesive Paste


Highlighted Pros

Available for small and huge projects

Extesnily versatile epoxy

High tack – wet grab effect

High thermal resistance


X Short shelf-life epoxy

X Takes fairly long to cure

PC-7 Epoxy is perfect for both small and huge metal to plastic projects. The formulation comes in packages from 2 oz to 10 gals (30ml to 3750ml). Be it joining long rails, filling large voids, or doing huge projects, you have the option of ordering the 10 gal package.

One key advantage is the high tack of PC-7 Epoxy which creates a wet grab effect that significantly reduces sag or drip.

PC-7 Epoxy features a high 2150 PSI tensile strength which produces a hard substance to mimic hard plastic and metal, that can withstand normal damage and abrasion that ordinary surfaces cannot.

PC-7 Epoxy is not only compatible with metal and plastic only but also perfect for fiberglass, wood, concrete, brick, glass, ceramic, and rubber. PC-7 Epoxy is therefore ideal for tank leak repairs, plumbing and masonry works including automotive repairs.

PC-7 Epoxy has a high thermal resistance of 200 degrees Fahrenheit which allows it to be fairly used as an adhesive to bond between friction joints, cookery lids, and common medium heat appliances.

6. Gorilla Epoxy Clear .85 Ounce Syringe, Clear, (Pack of 2)


Highlighted Pros

Strong and permanent epoxy repairs

Rapid action epoxy

Perfect for voids

100% waterproof

Easy to use epoxy

Rapid 6 minute set epoxy

Extremely durable


X Inconvenient dual syringe system

Gorilla Epoxy Clear is a strong and permanent epoxy owing to its resistance to water, abrasion, impact, and pressure. Gorilla Epoxy Clear is extremely durable and protects metal and plastic from day-to-day damage.

Gorilla Epoxy Clear is a fast action epoxy enabling quick completion of metal to plastic projects.

Gorilla Epoxy Clear is excellent for permanently sealing and filling metal to plastic depressions and voids.

Gorilla Epoxy Clear is not on;y compatible with metal and plastic but also wood, glass, and ceramic.

Gorilla Epoxy Clear is 100% waterproof and perfectly resists common solvents, acids, and chemicals.

Gorilla Epoxy Clear is easy to use since it dries clear, and is easy to clean and finish. Whether you are joining metal to plastic on a kitchen table or repairing an appliance or engine part you are covered when using Gorilla Epoxy Clear. Coupled with this is a reusable cap that extends the shelf life of the epoxy.

Gorilla Epoxy Clear has a 6 minute rapid setting time which is adequate enough to give a quick repositing for a precise fit.

7. J-B Weld 50133 Plastic Bonder Structural Adhesive Syringe – Tan – 25 ml


Highlighted Pros

Extensively versatile

High 3750 PSI tensile strength

Approved for use on automotive

Sufficient 15 minutes set time

Sandable in 15 minutes

Dries tan

Compatible with many plastics

Reusable cap


X Does not work well on polypropylene

Plastic Bonder is extensively versatile being applicable as a body panel adhesive and gap filler for metal to plastic panels. Plastic Bonder is approved for use in automotive to provide superior protection that withstands friction.

Plastic Bonder has a high tensile strength of 3750 PSI which is significant and important in creating a long-lasting adhesive and epoxy that withstands impact, solvent, and thermal limits.

Plastic Bonder has a set time of 15 minutes which is sufficient time to reposition objects for more precise metal to plastic projects. You can sand your project within 30 minutes of application which makes the epoxy perfect if the epoxy application was just a single stage in the bigger metal to plastic project.

Plastic Bonder dries tan which is a signature color for the majority of metallic substances, home appliances, and specific hard plastics.

Plastic Bonder works on all plastics including thermoplastics, thermoset, and carbon fiber composites, coated metals, and concrete. Plastic Bonder does not work well on polypropylene.

Due to its custom formulation that mainly favors bonds with plastic, Plastic Bonder is perfect when the joint between metal to plastic involves a larger plane of plastic than metal.

Plastic Bonder has a resealable cap which comes in handy when storing the remaining epoxy for future use.

8. CECCORP C-Tough Epoxy Adhesive


Highlighted Pros

Tough and flexible

Firm grip on metal, and plastic

Easy top mix 1:1 ratio

Extensively versatile

Perfect for many DIY projects

Adequate cure time

Available in 2 Gals packaging for large projects

C-Tough is both tough and flexible making it ideal for vibrations, and shock resistance. In addition, flexibility makes it perfect for environments with acute expansion and contraction cycles including outdoors.

C-Tough has an easy-to-mix ratio of 1:1 which makes it simple to use both for beginners as well as pros alike.

C-Tough is extensively versatile and applicable in many DIY projects, repairs which include: Knife Making Wooden and Aluminum Boat Repairs Bow Making Fiberglass Patching and Bonding Ski and Snowboard Repairs RV repair Golf re-shafting Sword Handle Repair Gun Stock Assembly and Repair Model Building Furniture Repairs/Manufacturing Motorcycle and Automobile Repairs Musical Instrument Repairs/Assembly Granite Repair RC Repair Manufacturing Pens Aluminum Transom Assembly.

C-Tough has a cure time of between 12-24 hours which is short enough to allow for next-day use and also long enough for full long-lasting cures.

Apart from metal and plastic, C-Tough is also compatible with Wood, Fiberglass, Glass, and Stone.

9. HG Power Glue Dual Adhesive System 0.8 oz


Highlighted Pros

Superfast action epoxy

Thermal resistant

Widely versatile

Ideal for DIY projects

100% waterproof

Dishwasher friendly


X Only for small projects

HG Power Glue is a super-fast setting and cures epoxy bonding to surfaces tightly in a matter of 5 seconds. 

HG Power Glue is a high thermal resistant epoxy with limits ranging from 239 to -49 degrees F. Your bond stays intact regardless of the season whether it be summer hot or winter cold. 

The key advantage of HG Power Glue is the wide range of materials that it bonds including metal, plastic, wood, rubber, glass, aluminum, ceramics, stone, and much more.

HG Power Glue forms a super-tight bond with 95% of all common materials meaning even if the metal to p[lastic bond is connected to another surface, HG Power Glue is applicable.

Some of the tasks and repairs that HG Power Glue does well include a crack in the bumper or motorcycle fairing, a broken headlight bracket, torn RV paneling, or simply an instant fix for your child’s favorite toy.

HG Power Glue is 100% waterproof resisting all weather elements related to humidity, rainfall, due, and vapor. Also, it is resistant to diesel, gasoline, and also dishwasher-friendly.

10. PC-Super Epoxy Adhesive Paste, Two-Part 300ml Cartridge, Translucent 3008


Highlighted Pros

Easy to pour

Wide service temperature range

High 2650 PSI tensile strength


X Not compatible with hard plastics

PC-Super Epoxy does not require mixing and flows from a joint 300ml cartridge. The epoxy cures into a translucent substance.

PC-Super Epoxy has a wide service temperature range from -20 to +200 degrees F.

PC-Super Epoxy provides a work time of 15 minutes, a cure time for service of 3 to 4 hours, and a full cure time of 3 to 7 days. These timeframes are significantly higher than those of competitors.

PC-Super Epoxy is compatible with Glass, Metal, Wood, Concrete, and Fiberglass.

The key pro is the high 2650 PSI strength which is perfect for creating strong unshakeable bonds.

Strongest Epoxy for Plastic to Metal – Buying Guide

After keenly researching, editing, filtering, and refining dozens of reviews for over 60 hours we finally produce a shortlist of key criteria that you should watch out for when selecting the strongest epoxy for plastic to metal.

1. High Tensile Strength

Epoxy with a tensile strength of above 1500 PSI qualifies to be considered strong epoxy. Go for high PSI that assures toughness and super durability.

2. Durability

Select epoxy which claims abrasion, scratch, and erosion resistance. With these features, you are assured of epoxy that will last a long time without fading in appearance or functionality.

3. Metal and Plastic Compatibility

The epoxy you select has to be 100% compatible with both metal and plastic. In select situations where epoxy is not compatible with certain configurations such as hard plastics, it is advisable to select another epoxy.

4. High Thermal Resistance

The biggest advantage of a wider service temperature is that your epoxy bond remains intact all season, winter and summer. Even if there are colder nights and hotter days, the effects of expansion and contraction do not significantly affect the integrity of your metal to plastic bond.

5. 100% Waterproof

Waterproof epoxy makes it easy for marine situations, chemical, acid, and common solvents resistance.


J-B Weld 8281 Professional Steel Reinforced Epoxy is the best strongest epoxy for plastic to metal. It not only ticks the key buying guide criteria but also exhibits superior specifications including the high 5020 PSI tensile strength and the 550 degrees F thermal resistance.

We believe you will find one or two epoxy which will be your best selection for strong adhesives to use for plastic to metal.

Happy Shopping!