3M™ Scotch-Weld™ Epoxy Adhesive DP420, Off-White, 50 ml Duo-Pak

3M™ Scotch-Weld™ Epoxy Adhesive DP420 Off-White 50 ml Duo-Pak Price in Kenya: KSh 11,100 Inc. VAT

When a standard glue is not strong enough for the application, but you need more working time and flexibility than a fast-setting adhesive can provide, 3M™ Scotch-Weld™ Epoxy Adhesive DP420 provides a professional structural bonding solution designed for demanding industrial, fabrication, automotive, manufacturing and assembly applications.

The 3M Scotch-Weld DP420 Off-White 50 ml Duo-Pak is a toughened, two-part epoxy structural adhesive engineered to provide high peel and shear strength together with strong impact and fatigue resistance.

With a 20-minute work life, DP420 gives installers enough time to position, align and adjust components before the adhesive sets. It cures at room temperature and can also reach high strength more quickly with heat curing. 3M identifies DP420 as suitable for demanding bonding applications and states that it can replace mechanical fasteners, screws, rivets and spot welds in many applications.

Startcore price: KSh 11,100 including VAT.

This makes DP420 an excellent option for professional users who need a structural epoxy rather than a general-purpose household adhesive.

3M DP420 Epoxy Adhesive Price in Kenya

Price: KSh 11,100 Inc. VAT

The 3M Scotch-Weld DP420 Off-White 50 ml Duo-Pak is available from Startcore Ventures Limited in Nairobi, Kenya.

For professional users, the cost of an adhesive should be considered in relation to the complete bonding job.

A failed adhesive joint can result in:

• Rework
• Labour costs
• Material wastage
• Equipment downtime
• Production delays
• Replacement components
• Customer complaints
• Project delays
• Emergency repairs

DP420 is designed for applications where the performance of the bonded joint matters.

Instead of choosing an adhesive simply because it is inexpensive, professional users can select a product based on the required strength, toughness, impact resistance, fatigue resistance, working time and environmental conditions.

What Is 3M Scotch-Weld DP420?

3M Scotch-Weld DP420 is a two-part epoxy structural adhesive supplied in an off-white 50 ml Duo-Pak.

It consists of two components that are combined during dispensing to initiate the curing process.

Unlike ordinary one-component glue, DP420 is engineered specifically for structural bonding.

3M describes DP420 as a toughened epoxy adhesive providing good strength together with high impact and fatigue resistance. It also provides high peel and shear strength.

The product is designed for applications where the adhesive needs to remain dependable when the bonded assembly is exposed to movement, vibration, impact or repeated loading.

This makes it particularly relevant to:

• Industrial fabrication
• Equipment assembly
• Automotive applications
• Manufacturing
• Engineering workshops
• Product assembly
• Machinery
• Transportation
• Composite assemblies
• Maintenance and repair

Key Benefits of 3M DP420

Toughened Structural Epoxy

DP420 is not simply a general-purpose epoxy.

Its toughened formulation is designed to improve resistance to impact and fatigue.

High Peel Strength

DP420 provides high peel strength, helping it perform in demanding bonded assemblies.

High Shear Strength

3M lists a typical shear strength of 4,420 psi under its specified test conditions.

High Impact Resistance

The adhesive is designed to withstand impact and shock better than many ordinary rigid adhesives.

Fatigue Resistance

DP420 is formulated for applications involving repeated loading and movement.

20-Minute Work Life

The approximately 20-minute open/work life provides time for positioning and adjustment before the adhesive sets.

Non-Sag Application

DP420 is described by 3M as a non-sag adhesive, making it easier to control during certain vertical or overhead bonding applications.

Room-Temperature Cure

DP420 cures at room temperature, making it convenient for applications where heating equipment is not practical.

Faster High-Strength Development with Heat

3M also states that DP420 reaches high strength quickly with heat cure.

Why Use a Toughened Epoxy?

A common misconception is that the hardest adhesive is always the strongest adhesive.

In structural bonding, toughness is extremely important.

A joint can be exposed to:

• Impact
• Shock
• Vibration
• Flexing
• Thermal expansion
• Repeated loading
• Mechanical movement

An adhesive that is extremely rigid but brittle can crack under sudden loading.

A toughened epoxy is designed to provide a better balance between strength and resistance to mechanical stress.

This is one of the reasons DP420 is suited to demanding bonding applications.

The objective is not simply to make two surfaces stick together.

The objective is to create a bonded assembly capable of handling the conditions it will experience during service.

DP420 for High-Strength Structural Bonding

Structural adhesive bonding is increasingly important in manufacturing, engineering and fabrication.

Instead of relying entirely on:

• Screws
• Bolts
• Rivets
• Welding
• Mechanical fasteners

an adhesive can be incorporated into the design of the assembly.

3M specifically states that Scotch-Weld DP420 can replace mechanical fasteners, screws, rivets and spot welds in many applications.

This does not mean DP420 should automatically replace mechanical fastening or welding in every application.

The joint needs to be designed for adhesive bonding, and safety-critical applications should be properly engineered.

However, where adhesive bonding is appropriate, DP420 can provide an alternative joining technology.

DP420 for Metal Bonding

Metal fabrication is one of the areas where structural epoxy adhesives can provide significant advantages.

Traditional metal joining methods remain essential, but adhesive bonding can be useful where:

• Heat from welding is undesirable
• A clean appearance is required
• Dissimilar materials need to be joined
• Mechanical fasteners are difficult to install
• Load distribution across a bonded area is beneficial
• Drilling holes would weaken the component
• A continuous bonded joint is preferred

DP420 can be used for suitable metal bonding applications when the substrate, joint design and operating conditions are compatible.

The actual metal surface should always be properly prepared before bonding.

DP420 for Metal-to-Plastic Bonding

Modern industrial products frequently combine metal and plastic.

This creates a challenge because the two materials can behave differently under load and temperature.

Metal is generally rigid.

Plastic may flex and have a different coefficient of thermal expansion.

A suitable structural adhesive can accommodate the requirements of the bonded assembly better than simply relying on mechanical fastening.

DP420 is therefore useful to consider for suitable mixed-material assemblies.

Potential applications include:

• Equipment housings
• Machine components
• Automotive components
• Electrical enclosures
• Industrial assemblies
• Fabricated products
• Fixtures
• Panels

Always test the actual plastic before committing the adhesive to a production or safety-critical application.

Different plastics have different surface properties.

DP420 for Plastic Bonding

Plastic bonding can be difficult because not all plastics behave in the same way.

Some plastics bond relatively easily.

Others have low surface energy and may require specialized adhesive systems or surface treatment.

DP420 is a structural epoxy and can be considered for suitable plastic bonding applications.

However, users should not assume that every plastic will bond equally well.

For critical applications, test:

• The exact plastic
• The exact surface finish
• The actual joint design
• The required load
• The expected service temperature
• The environmental conditions

This approach reduces the risk of adhesive failure.

DP420 for Composite Assemblies

Composite materials are increasingly used in manufacturing, transport, engineering and specialist fabrication.

Adhesive bonding can provide advantages over mechanical fastening because the load can be distributed across a larger bonding area.

This can reduce the need to drill holes through composite materials.

DP420's combination of toughness, impact resistance, fatigue resistance and high peel/shear strength makes it suitable to consider for appropriate composite bonding applications.

The final performance will depend on the specific composite materials and joint design.

DP420 for Automotive Applications

Automotive manufacturing and repair involve many different materials.

Modern vehicles can contain:

• Steel
• Aluminium
• Plastics
• Composites
• Rubber
• Coated surfaces
• Interior materials

Structural adhesive bonding can be used for suitable assembly applications.

DP420's resistance to impact and fatigue makes it particularly relevant where the bonded assembly experiences vibration and repeated movement.

Potential applications may include suitable:

• Interior assemblies
• Trim components
• Brackets
• Panels
• Equipment mounts
• Fabricated components
• Mixed-material assemblies

However, DP420 should not automatically be used for safety-critical automotive components.

Do not substitute an adhesive for a specified mechanical or welded joint in braking, steering, suspension or other safety-critical systems unless the application has been professionally engineered and approved.

DP420 for Industrial Equipment

Industrial equipment operates under demanding conditions.

Machinery can experience:

• Continuous vibration
• Shock
• Repeated loading
• Temperature changes
• Movement
• Environmental exposure

A structural adhesive can form part of the assembly strategy where appropriately engineered.

DP420 can be considered for suitable industrial equipment applications where high strength and toughness are required.

It is particularly useful where a rigid mechanical fastening system may not provide the desired assembly characteristics.

DP420 for Machinery and Maintenance

Maintenance teams regularly face situations where replacing a complete component is expensive or causes unnecessary downtime.

A structural adhesive can sometimes provide a repair or assembly option.

DP420 can be considered for appropriate:

• Equipment repairs
• Component assemblies
• Fixtures
• Enclosures
• Brackets
• Panels
• Mixed-material components

However, repair suitability must be assessed carefully.

A bonded repair should not be used to restore a safety-critical component unless the repair has been properly engineered.

20-Minute Work Life: Why It Matters

One of DP420's most important characteristics is its 20-minute work life.

This provides the installer with time to:

• Apply the adhesive
• Position components
• Align the assembly
• Make adjustments
• Check fit
• Secure the parts

This is particularly useful when working on assemblies that cannot be positioned correctly in only a few seconds.

Compare this with an instant adhesive.

A cyanoacrylate may set extremely quickly.

That can be useful for small repairs, but it can also become a problem when accurate alignment is required.

DP420 gives the professional installer considerably more time to complete the assembly correctly.

Room-Temperature Curing

Another important benefit of DP420 is that it cures at room temperature.

This means that the adhesive does not necessarily require an oven or specialized heating equipment to develop its bond.

For workshops and contractors, this makes the product easier to integrate into normal working processes.

The adhesive can be used where the assembly is prepared and bonded at normal ambient conditions.

For applications where faster strength development is required, 3M also states that DP420 reaches high strength quickly with heat cure.

DP420 Cure Time

3M lists approximately:

Handling strength: 2 hours

Full cure: 24 hours at 23°C

These values are based on specified test conditions and should not be interpreted as universal curing times for every application.

Actual curing can be affected by:

• Temperature
• Bond thickness
• Substrate
• Joint configuration
• Amount of adhesive
• Environmental conditions

Do not subject a newly bonded assembly to loads beyond the appropriate handling stage simply because the adhesive appears hard.

Allow sufficient curing time before putting the assembly into demanding service.

DP420 Mix Ratio

3M lists the DP420 base-to-accelerator volume mix ratio as:

2:1

This is important because two-part epoxy adhesives depend on the correct ratio of resin and hardener to cure properly.

The Duo-Pak system is designed to simplify controlled dispensing.

Use the appropriate 3M dispensing equipment and follow the manufacturer's instructions.

Do not manually estimate the components unless the product instructions specifically permit the method.

DP420 Duo-Pak 50ml

The product supplied is:

3M™ Scotch-Weld™ Epoxy Adhesive DP420, Off-White, 50 ml Duo-Pak

3M identifies the product as:

3M Product Number: DP420NS

3M ID: 7100320459

3M Stock: B5005321028

UPC: 00068060756701

The 50 ml format is particularly practical for:

• Workshops
• Repair technicians
• Small production runs
• Prototyping
• Equipment maintenance
• Fabrication
• Specialist assembly

It provides access to a professional structural adhesive without requiring a large industrial container.

How to Apply 3M DP420

Step 1: Identify the materials

Before applying the adhesive, identify exactly what materials are being joined.

Check whether DP420 is suitable for the particular substrates.

Step 2: Test compatibility

For important applications, conduct a test bond using the actual materials.

This is especially important for plastics, coatings and composite materials.

Step 3: Clean the surfaces

Remove:

• Dust
• Oil
• Grease
• Dirt
• Loose particles
• Contaminants

The adhesive should contact a clean bonding surface.

Step 4: Prepare the joint

Dry-fit the components before applying adhesive.

Make sure the parts can be positioned correctly within the work life.

Step 5: Use the correct dispensing system

Use the appropriate 3M Scotch-Weld EPX dispensing equipment for the Duo-Pak configuration.

This helps achieve controlled dispensing and proper mixing.

Step 6: Dispense the adhesive

Apply the required amount of DP420 to the bonding area.

Avoid excessive adhesive.

Step 7: Assemble

Bring the components together.

Position and align them carefully.

Step 8: Secure

Use clamps, fixtures or other appropriate positioning methods if required.

Step 9: Allow to cure

Allow the adhesive sufficient time to develop handling strength and final cure before placing the assembly under demanding load.

Surface Preparation Is Critical

The quality of a structural adhesive joint depends heavily on surface preparation.

Even a high-performance adhesive cannot compensate for:

• Oil contamination
• Dust
• Loose paint
• Poorly bonded coatings
• Moisture
• Dirt
• Incorrect joint geometry

A good bonding process therefore includes surface preparation as a fundamental step.

For industrial applications, the preparation procedure should be selected according to the actual substrate.

Common Mistakes When Using DP420

Applying to dirty surfaces

Oil and grease can significantly compromise adhesion.

Using an incorrect mix ratio

Two-part epoxy chemistry requires the correct proportion of components.

Rushing the assembly

Although DP420 has a 20-minute work life, the installer should plan the assembly before dispensing.

Applying too much adhesive

A larger quantity does not automatically create a stronger joint.

Loading the joint too early

Handling strength is not the same as full cure.

Ignoring thermal movement

Dissimilar materials can expand and contract differently.

The joint should be designed accordingly.

Assuming every plastic is compatible

Different plastics behave differently.

Test the actual material.

DP420 vs DP190

Startcore also offers 3M Scotch-Weld DP190, making this an important comparison for customers.

Both are two-part epoxy structural adhesives.

However, DP420 is particularly attractive where impact and fatigue resistance are major requirements.

DP420

• Toughened epoxy
• High impact resistance
• High fatigue resistance
• High peel strength
• High shear strength
• 20-minute work life
• Non-sag
• Room-temperature cure
• High strength with heat cure

DP190

DP190 is a versatile structural epoxy designed for strong bonding across a wide variety of substrates, with an extended work life.

Therefore:

Choose DP420 when toughness, impact resistance and fatigue resistance are important.

Choose DP190 when you need a versatile structural epoxy with a longer working window for positioning and adjustment.

The right product ultimately depends on the application.

DP420 vs DP490

You are now also offering 3M Scotch-Weld DP490, so this comparison is useful for customers.

DP420 and DP490 are both toughened structural epoxies.

DP420

Best positioned around:

• High impact resistance
• Fatigue resistance
• High peel and shear strength
• 20-minute work life
• Room-temperature curing
• Compact 50 ml Duo-Pak format

DP490

Best positioned for:

• Higher toughness requirements
• Demanding structural applications
• Gap filling
• Non-sag vertical application
• High impact resistance
• Fatigue performance
• Environmental resistance
• Temperature resistance up to 120°C

This gives Startcore a strong three-product epoxy range:

DP190 → versatile structural epoxy

DP420 → toughened structural epoxy for impact and fatigue

DP490 → demanding structural bonding with higher toughness and environmental/temperature performance

That distinction is valuable for SEO because each product page can target a different search intent rather than creating three pages that compete for exactly the same keywords.

DP420 vs Super Glue

Super glue is designed for speed.

DP420 is designed for structural performance.

A super glue may be appropriate for:

• Small repairs
• Quick assembly
• Lightweight components
• Rapid bonding

DP420 is better positioned when the assembly requires:

• Structural strength
• Impact resistance
• Fatigue resistance
• High peel/shear strength
• More positioning time

The products should not be treated as interchangeable.

DP420 vs Silicone

Silicone is primarily a sealant.

It is used for:

• Waterproofing
• Weather sealing
• Flexible joints
• Glazing
• Expansion movement

DP420 is a structural adhesive.

If you need to bond components, consider DP420.

If you need to seal a joint against water or weather, select an appropriate sealant.

If the application requires both bonding and sealing, use products designed for each function.

Recommended Startcore Product Bundle

A major opportunity on this product page is cross-selling.

A customer buying DP420 is likely to be a professional working on a bonding, repair, fabrication or assembly job.

That customer may also need complementary products.

Bundle 1: DP420 + DP190

This is the strongest internal bundle for your 3M structural adhesive range.

3M DP420: toughened structural epoxy for impact and fatigue resistance.

3M DP190: versatile structural epoxy for general industrial bonding.

This gives workshops two complementary structural epoxy technologies.

Bundle 2: DP420 + DP490

For professional engineering customers, DP420 and DP490 can form a higher-end structural adhesive selection.

DP420: 20-minute work life and strong impact/fatigue performance.

DP490: higher toughness, gap filling, non-sag application and demanding environmental/temperature performance.

This is particularly useful for fabrication and manufacturing customers who need different adhesive characteristics for different assemblies.

Bundle 3: DP420 + Akfix E340

For general repair workshops, pair DP420 with Akfix E340 Quick Setting Clear Epoxy.

Akfix E340 is currently available from Startcore for KSh 650 including VAT. It is a fast-setting clear epoxy designed for quick repairs and bonding applications.

DP420: professional structural bonding.

E340: quick-setting general repair epoxy.

This gives the customer a premium adhesive for demanding applications and a lower-cost quick repair option.

Bundle 4: DP420 + Akfix E350

For maintenance and metal repair, pair DP420 with Akfix E350 Steel Epoxy & Quick Fix Putty.

E350 is currently available from Startcore for KSh 650 including VAT and is positioned for metal repair, rebuilding, gap filling and maintenance applications.

This creates a useful workshop combination:

DP420: structural bonding.

E350: metal repair and rebuilding.

Bundle 5: DP420 + Somafix S580

For contractors who need both bonding and sealing, pair DP420 with Somafix S580 High Tack Adhesive Sealant 290ml.

Startcore currently lists S580 at KSh 1,750 per tube.

DP420: structural epoxy bonding.

S580: high-tack adhesive sealing and mounting.

This prevents the common mistake of trying to use an epoxy for applications where a flexible adhesive-sealant is more appropriate.

Applications for 3M DP420

DP420 can be considered for a broad range of professional applications.

Industrial fabrication

Bonding suitable components during equipment and product fabrication.

Engineering workshops

Repairing and assembling compatible components.

Automotive

Suitable manufacturing and assembly applications involving compatible substrates.

Manufacturing

Joining components during production.

Machinery

Bonding appropriate machine components and assemblies.

Composite fabrication

Suitable composite bonding applications.

Product assembly

Bonding components without relying entirely on mechanical fasteners.

Equipment maintenance

Appropriate repairs and assembly where structural adhesive bonding has been engineered into the repair.

Who Should Buy 3M DP420?

DP420 is particularly relevant to:

• Engineers
• Fabricators
• Manufacturers
• Automotive technicians
• Industrial maintenance teams
• Machinery technicians
• Construction professionals
• Product assemblers
• Engineering workshops
• Composite fabricators
• Equipment manufacturers
• Repair specialists
• Industrial procurement departments

It is designed for professional applications rather than being positioned simply as household glue.

Why Buy 3M DP420 from Startcore?

Startcore Ventures Limited supplies professional construction chemicals, adhesives, sealants, power tools and industrial products in Kenya.

The company operates from:

Bhavesh Centre, Mezzanine Floor, Ngara Road, Nairobi.

Startcore's website positions the company as a supplier of construction chemicals, power tools, PPE and industrial products for contractors, hardware retailers and project managers.

Startcore also identifies 3M among its brand partners.

For specialist adhesives, product selection is important.

If you are unsure whether DP420 is appropriate, provide:

• Material 1
• Material 2
• Joint size
• Indoor/outdoor application
• Expected load
• Temperature exposure
• Vibration or impact exposure

This makes it easier to select the correct adhesive technology.

3M DP420 Product Specifications

Specification

3M Scotch-Weld DP420
Brand | 3M
Product family | Scotch-Weld
Product | DP420
Alternative ID | DP420NS
Colour | Off-White
Product type | Two-part epoxy structural adhesive
Pack size | 50 ml
Packaging | Duo-Pak
Mix ratio | 2:1
Work life | Approximately 20 minutes
Handling strength | Approximately 2 hours
Full cure | Approximately 24 hours at 23°C
Typical shear strength | 4,420 psi
Adhesive characteristics | Toughened, non-sag
Peel strength | High
Shear strength | High
Impact resistance | High
Fatigue resistance | High
Cure | Room temperature
Heat cure | Available for faster high-strength development
Primary applications | Bonding, assembly, mounting, potting and suitable structural applications
Price | KSh 11,100 Inc. VAT
Supplier | Startcore Ventures Limited
Location | Nairobi, Kenya

Specifications are based on 3M's published product information and test conditions. Actual performance depends on substrate, surface preparation, joint design, temperature and application conditions.

Frequently Asked Questions

What is 3M DP420?

3M Scotch-Weld DP420 is a toughened two-part epoxy structural adhesive designed for high-strength bonding with high impact and fatigue resistance.

What is the price of 3M DP420 in Kenya?

The Startcore price is KSh 11,100 including VAT.

What size is this DP420?

This product is the 50 ml Duo-Pak version.

What colour is DP420?

This version is off-white.

What is the work life of DP420?

3M specifies approximately 20 minutes of work life, providing time for positioning and adjustment.

How long does DP420 take to cure?

3M lists approximately 2 hours to handling strength and 24 hours for full cure at 23°C under its specified conditions.

Is DP420 a structural epoxy?

Yes. It is specifically described by 3M as a two-part epoxy structural adhesive.

Is DP420 impact resistant?

Yes. DP420 is toughened for impact and fatigue resistance.

Is DP420 suitable for vibration?

DP420's toughened formulation and fatigue resistance make it suitable to consider for applications exposed to vibration and repeated loading.

The complete joint should nevertheless be engineered for its expected service conditions.

Can DP420 replace screws?

3M states that DP420 can replace mechanical fasteners, screws, rivets and spot welds in many applications.

This does not mean it should replace mechanical fastening in every application.

Can DP420 be used on metal?

Yes, DP420 can be considered for suitable metal bonding applications.

Can DP420 bond plastic?

It can be used for suitable plastic bonding applications, but compatibility depends on the exact plastic.

Can DP420 be used outdoors?

Suitability depends on the substrates and environmental conditions. For demanding outdoor applications, verify the technical requirements with 3M.

Does DP420 require heat to cure?

No. 3M states that DP420 cures at room temperature. Heat can also be used to achieve high strength more quickly.

What is the difference between DP420 and DP490?

Both are toughened structural epoxies. DP420 has a 20-minute work life and is particularly positioned around impact and fatigue resistance. DP490 is positioned for demanding applications requiring high toughness, gap filling, non-sag behaviour and environmental/temperature resistance.

What is the difference between DP420 and DP190?

DP420 is specifically toughened for high impact and fatigue resistance, while DP190 is a versatile structural epoxy with an extended working window. Choose according to the application's performance requirements.

Can I use DP420 for construction?

Yes, it can be considered for appropriate construction-related fabrication and bonding applications. However, it should not automatically replace purpose-designed structural anchors, sealants or other construction systems.

Where can I buy 3M DP420 in Nairobi?

You can purchase 3M Scotch-Weld DP420 Off-White 50 ml Duo-Pak from Startcore Ventures Limited, Bhavesh Centre, Mezzanine Floor, Ngara Road, Nairobi.

Order 3M Scotch-Weld DP420 in Kenya

When you need a professional adhesive that combines high strength, toughness, impact resistance and fatigue resistance, 3M Scotch-Weld DP420 provides a serious structural bonding solution.

Its 20-minute work life provides useful time for positioning and adjustment, while room-temperature curing makes it practical for professional workshops, fabrication environments and assembly applications.

3M specifically describes DP420 as a toughened two-part epoxy structural adhesive capable of replacing mechanical fasteners, screws, rivets and spot welds in many applications.

3M™ Scotch-Weld™ Epoxy Adhesive DP420

Off-White – 50 ml Duo-Pak

Price: KSh 11,100 Inc. VAT

Available from:

Startcore Ventures Limited
Bhavesh Centre, Mezzanine Floor
Ngara Road, Nairobi, Kenya

Mobile/WhatsApp: +254 705 544 817
Email: [email protected]
Website: www.startcore.co.ke

For the best result, don't simply tell us that you need "epoxy."

Tell us what you are bonding, the materials involved, the expected load and the environment, and we can help you select between DP190, DP420, DP490 and other adhesive technologies available from Startcore.