Metal Repair Epoxy Paste | Waterproof Cold Weld Glue Sealant

Super-Strong Metal Repair Epoxy Paste — Bond, Seal & Restore in Minutes

Whether you're patching a cracked aluminum casting, sealing a leaking fuel tank, or restoring a damaged plastic bumper, this two-part epoxy repair paste delivers an industrial-strength bond without a torch or welder. Simply mix equal parts A and B, apply to the surface, and let chemistry do the heavy lifting — initial cure in just 1 hour, full cure in 24 hours.

Key Features

• Wide Material Compatibility: Bonds metals (steel, iron, aluminum), ceramics, plastics, and wood — ideal for casting defects, scratches, corrosion, and fractures.
• Waterproof & Weather-Resistant: Fully cured adhesive resists water, oil, and outdoor exposure, making it a reliable sealant for tanks, radiators, and more.
• Extreme Temperature Range: Performs from -60 °C to 200 °C (-76 °F to 392 °F), handling both freezing and high-heat environments with ease.
• No Strict Surface Prep Required: Minimal degreasing needed — just clean away loose debris, lightly sand, mix, and apply.
• Tough, Flexible Bond: Cured layer resists cracking, aging, and oil staining, maintaining integrity over repeated stress cycles.
• Multiple Size Options: Available in 20 g, 50 g, 70 g, and 100 g quantities to suit small DIY repairs or larger industrial jobs.

Technical Specifications

Common Applications

• Steel, iron & aluminum castings — sand holes, pores, cracks
• Automotive: fuel tanks, bumpers, reflectors, electrical housings
• Industrial: transformers, radiators, motors, elevator components
• Plastic panels, lamps, and ceramic or wood assemblies

How to Use

1. Clean the repair area thoroughly, removing dirt, grease, and loose particles.
2. Lightly file or sand the surface to improve adhesion.
3. Mix equal volumes of Part A and Part B until a uniform colour is achieved.
4. Apply the blended paste to the repair area and shape as needed.
5. Allow 1 hour for initial set; wait a full 24 hours before machining, drilling, or heavy loading.

Made in Mainland China.

For safe handling of adhesives and epoxy compounds in DIY and industrial settings, refer to guidelines from the U.S. Consumer Product Safety Commission (CPSC).

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Frequently Asked Questions

Q: What materials can this metal repair epoxy paste bond?

A: This two-part epoxy is formulated to bond metals (steel, iron, aluminum), ceramics, plastics, and wood. It is especially effective for repairing casting defects like sand holes, pores, cracks, and surface abrasions on metal parts and equipment.

Q: How long does it take for the epoxy to fully cure?

A: The paste achieves an initial set in approximately 1 hour, making the repair stable enough to handle. Full structural cure is reached in 12–24 hours, after which the bonded surface can be drilled, sanded, painted, or subjected to load.

Q: Is this epoxy waterproof and heat resistant?

A: Yes. Once fully cured, the adhesive layer is waterproof, oil-resistant, and rated for temperatures from -60 °C to 200 °C (-76 °F to 392 °F), making it suitable for automotive fuel tanks, radiators, industrial machinery, and outdoor applications.

Q: How much surface preparation is required before applying the epoxy?

A: Strict degreasing is not necessary. Simply clean away loose debris and lightly roughen the surface with sandpaper or a file. This makes the repair process fast and straightforward for both DIY users and professionals.

Q: What sizes are available?

A: The epoxy repair paste is available in 20 g, 50 g, 70 g, and 100 g options, so you can choose the right quantity for small household fixes or larger industrial repair jobs.