S300 Structural Metal Epoxy for Aluminum & Steel, Cold Weld, 1.69 oz
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- 1.REPAIR BEFORE REPLACE: AOJEL S300 is a 2-part structural metal epoxy system and aluminum repair epoxy for prepared aluminum, steel, stainless steel, cast iron and cast aluminum; rebuilds rigid brackets, housings and castings
- 2.CONTROL THE MIX, TRUST THE REPAIR: AOJEL Repair Control 7-Step Protocol: PREPARE, PURGE, MIX, BUILD, ALIGN, CLAMP, CURE; purge until Parts A and B flow evenly, discard the first uneven bead, then mix true 1:1 until uniform
- 3.30 MINUTES TO GET IT RIGHT: The AOJEL 30 / 3-4 / 24 System gives up to 30 minutes at 77°F/25°C to fill, build, position, align and clamp; 3-4 hours to initial set; at least 24 hours before loading or finishing
- 4.COLD-WELD ALTERNATIVE, AOJEL BUILT-REPAIR METHOD: Rebuild rigid metal without flame, sparks or welding setup; extend beyond the damage, build a hard repair body and reinforce load-bearing rigid repairs with a metal patch, mesh or bracket when needed
- 5.BUILT TO RETURN PARTS TO SERVICE: After full cure, S300 is waterproof, oil resistant and heat resistant up to 392°F; the cured repair is drillable, sandable, fileable, shapeable and paintable
- 6.KEEP USEFUL PARTS WORKING: For cracked castings, pot metal, stripped bolt or thread holes, worn rigid parts and prepared non-pressure exterior oil-pan or crankcase areas; restore function, reduce downtime and avoid unnecessary replacement
- 7.PREP ONCE, MAKE THE REPAIR COUNT: Degrease and roughen the metal, dry-fit parts and stage clamps or reinforcement before mixing; cleaner application, easier alignment and fewer rushed decisions make the result more predictable
- 8.EVERYTHING NEEDED TO START: Includes one 1.69 oz / 50 ml dual cartridge, push rod and spatula; no extra applicator is required for standard repairs; a compatible dual-cartridge dispensing gun adds control for repeated or larger jobs
- 9.CONTROL THE QUANTITY, KEEP REPAIR WITHIN REACH: Mix only what the job requires, recap the cartridge and store unmixed epoxy as directed; ideal for localized repairs; larger build-ups or multiple parts may need additional packs
- 10.HONEST ENGINEERING, CLEAR LIMITS: For rigid metal repairs only; not for PE, PP, PTFE, silicone, soft plastics, flexible or moving parts, torsion loads, fuel or brake lines, exhaust manifolds, internal engine cracks or pressure-critical systems
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Estimated shipping
Select a product to estimate shipping.A CONTROLLED STRUCTURAL REPAIR SYSTEM FOR RIGID PARTS
STRUCTURAL METAL EPOXY FOR ALUMINUM & STEEL
THE PROBLEM IS NOT ONLY THE CRACK. IT IS THE REPAIR SYSTEM.
Many repairs fail because the damage is covered, not rebuilt . AOJEL S300 is a 2-part structural metal epoxy and cold-weld alternative for prepared, rigid and non-flexing aluminum and metal parts.
It bonds, fills and rebuilds aluminum, steel, stainless steel, cast iron, cast aluminum and pot metal when welding is difficult or impractical.
Not a quick patch. A built-up repair body for brackets, housings, castings, frames, tools, fittings, stripped bolt or thread holes and localized exterior metal damage.
WHY AOJEL HOLDS
• Approx. Shore D 85–90 hardness after full cure
• Up to 30 minutes to fill, position, align and clamp
• Waterproof, oil resistant and heat resistant up to 392°F after full cure
• Drillable, sandable, fileable, shapeable and paintable after full cure
A rigid repair needs more than adhesive. It needs clean metal, sufficient bonding area, accurate alignment and complete cure.
When a part still has useful life, choose a repair system built to restore function—not merely cover damage.
Not a Thin Coat. A Built-Up Metal Repair Body.
Fast ≠ Strong.
CONTROLLED, NOT RUSHED.
Use the working window to get the repair right—not simply to get it done fast.
「THE AOJEL 30 / 3–4 / 24 SYSTEM」
• Up to 30 minutes of working time at 77°F / 25°C
• 3–4 hours to initial set
• At least 24 hours before loading, drilling, sanding, filing, shaping or painting
Time to position correctly.
Time to align accurately.
Time to build the repair before cure.
Cold-Weld Style. No Heat.
No flame. No sparks. No welding setup.
AOJEL S300 bonds, fills and rebuilds prepared rigid metal—a controlled cold-weld alternative when conventional welding is difficult, costly or impractical.
After full cure, it forms a hard, finishable repair body that helps properly repaired rigid parts return to service .
Complete cure matters.
Apply and cure AOJEL S300 under recommended conditions before loading, machining or placing the repair into service.
Hard-Cure, Finishable Repair
After full cure, AOJEL S300 reaches Shore D 85–90 hardness in documented tests. When mixed thoroughly and built to sufficient thickness, the repair can be drilled, sanded, filed, shaped and painted.
「AOJEL BUILT-REPAIR METHOD」
Do not cover only the crack. When the part geometry allows, extend S300 approximately 0.5–1 inch beyond the visible damage and build sufficient repair thickness .
GENERAL BUILD GUIDANCE:
• Small repairs: approximately 1/16–1/8 inch
• Deeper or stress-bearing rigid repairs: approximately 1/8–1/4 inch
• High-stress rigid repairs: reinforce with a metal patch, mesh or bracket when needed
BUILD THE REPAIR, NOT JUST THE SURFACE.
General guidance only. Actual requirements depend on material, geometry, load, preparation, mixing accuracy and reinforcement.
REPAIR WITH CONFIDENCE: THE METHOD BEHIND A RELIABLE METAL REPAIR
A CLEAR METHOD MAKES REPAIR POSSIBLE
A reliable repair is not one action. It is a controlled sequence.
「AOJEL REPAIR CONTROL 7-STEP PROTOCOL」
PREPARE → PURGE → MIX TRUE 1:1 → BUILD → ALIGN → CLAMP → CURE
Weak repairs often begin with contamination, smooth metal, uneven Part A and Part B flow, incomplete mixing, insufficient thickness, poor alignment or loading too soon.
LESS PANIC. MORE PRECISION.
• Clean and roughen the metal
• Purge until Parts A and B flow evenly ; discard the first uneven bead
• Mix true 1:1 until completely uniform
• Build beyond the damage ; align, clamp and reinforce when needed
• Respect the cure before loading or finishing
When the method is clear , the repair becomes easier to plan, easier to control and more predictable .
Keep AOJEL ready before the next break asks for it. For larger jobs or repair teams, consider ordering multiple packs.
CONTROL THE DETAILS. TRUST THE REPAIR. —— Repair brings objects back to life. It deserves the discipline of engineering.
EVEN FLOW BEFORE MIXING
Dispense slowly until Part A and Part B flow evenly . Discard the first uneven bead, then measure equal amounts and mix at a true 1:1 ratio until the color and texture are completely uniform .
NO STREAKS. NO SEPARATION. NO UNMIXED MATERIAL.
Accurate 1:1 mixing is essential for a complete, reliable cure.
The included push rod and mixing spatula support standard repairs .
For repeated, precise or larger jobs , an optional compatible dual-cartridge dispensing gun provides cleaner, more even flow and greater control .
MECHANICAL GRIP MATTERS
Clean, dry and roughen first.
Oil, rust, paint, dust and moisture can weaken surface contact. Smooth aluminum and metal also provide less mechanical grip .
Degrease, sand or file the repair area to create a clean, textured surface and larger bonding area.
Dry-fit the parts and prepare clamps or reinforcement before mixing.
Surface preparation gives the epoxy a better foundation for the repair that follows.
CLAMP BEFORE LOAD
Apply evenly and maintain sufficient repair thickness .
Align and clamp the parts before initial set.
For high-stress or rigid load-bearing repairs, reinforce with a metal patch, mesh or bracket when needed.
Allow at least 24 hours before loading , drilling, sanding or stress-testing.
For rigid, non-flexing parts only — not moving, bending or torsion-loaded components.
CONTROL THE ALIGNMENT. RESPECT THE CURE.
CARE STARTS BEFORE THE BREAK GETS WORSE
When a rigid part fails, the job stops.
A cracked casting, damaged housing, stripped thread hole or broken bracket can interrupt work, increase downtime and turn a repairable problem into unnecessary replacement.
WHY SOME BROKEN PARTS KEEP WORKING
Some damaged parts are discarded. Others can return to service after a properly planned repair.
The difference is knowing when a useful rigid component can be rebuilt—and choosing a repair system that matches the task.
AOJEL S300 is made for that decision.
*Repair is not simply covering damage. It is restoring function, reducing downtime and helping useful parts keep working .
From surface preparation to complete cure, AOJEL brings method and control back to the repair.
Plan the repair before mixing .
Choose the quantity , tools , repair thickness , reinforcement and cure time the job requires.
KEEP REPAIR WITHIN REACH
PREPARED ONCE. READY WHEN NEEDED.
Keep AOJEL S300 in the toolbox , garage or workshop for localized rigid metal repairs.
Use only what the job requires.
Keep Parts A and B separate , clean the outlets, replace the cap and store the remaining unmixed epoxy as directed.
Each cartridge contains 1.69 oz / 50 ml . Choose the 1-, 2-, 3- or 5-pack based on repair size , required thickness , multiple parts or workshop stock.
BUILT FOR ALL-SEASON SERVICE
After full cure, AOJEL S300 has an approximate service range of -22°F to 392°F , supporting exterior rigid metal repairs through cold winters and hot workshop conditions .
This is a post-cure service range, not an application or curing temperature.
HONEST ENGINEERING. CLEAR LIMITS.
DESIGNED FOR — Aluminum, steel, stainless steel, cast iron, cast aluminum and pot metal; brackets, housings, castings and stripped threads.
NOT FOR — PE, PP, PTFE, silicone, soft/flexible materials; moving or torsion-loaded parts; fuel/brake lines, exhaust manifolds or pressure-critical systems.
Real confidence comes from knowing both when to repair and when not to.
THE RIGHT MATERIAL.
THE RIGHT METHOD.
THE RIGHT REPAIR.
REPAIR BEFORE REPLACEMENT
A cracked bracket, damaged housing, worn edge, stripped thread hole or broken rigid casting can spread under use when ignored or patched poorly.
Repair early— while the damaged area is accessible, alignment can still be restored and reinforcement can be planned .
AOJEL S300 helps turn a repairable problem into a controlled repair before it becomes more downtime, more waste or a full replacement.
CHOOSE THE SYSTEM BUILT AROUND MATERIAL, METHOD AND CONTROL.
SHOPPING QUESTIONS BEFORE YOU REPAIR
REPAIR BETTER . WASTE LESS . Give useful rigid metal parts a controlled path back to service.
Q1: What epoxy can repair rigid aluminum parts without welding?
A: AOJEL S300 is a 2-part dual-cartridge structural metal epoxy and cold-weld alternative for prepared aluminum, steel, stainless steel, cast iron and cast aluminum . Use it on rigid brackets, housings, castings and localized metal repairs .
Q2: How do I get an accurate 1:1 epoxy mix?
A: Purge a small test bead until Parts A and B flow evenly . Discard the first uneven bead, then mix equal amounts until the color and texture are completely uniform with no streaks.
Q3: How much working and cure time do I have?
A: At 77°F / 25°C, working time is up to 30 minutes. Initial set is 3–4 hours . Wait at least 24 hours before loading, drilling, sanding or painting.
Q4: Is the cured repair waterproof, heat resistant and finishable?
A: After full cure, AOJEL S300 is waterproof, oil r esistant and heat resistant up to 392°F . When properly mixed and built to sufficient thickness, it can be drilled, sanded, filed, shaped and painted.
Q5: Can AOJEL S300 repair load-bearing or moving parts?
A: Use AOJEL S300 only on rigid, non-flexing parts built to sufficient thickness and mechanically reinforced when needed. Do not use it on moving, bending or torsion-loaded components.
Q6: Is S300 a putty stick, and does it require a special applicator?
A: No. S300 is a dual-cartridge epoxy, not a hand-kneaded putty. Each unit includes a 1.69 oz / 50 ml cartridge, push rod and mixing spatula, so no additional applicator is required for standard repairs . For repeated or larger jobs , a compatible dual-cartridge dispensing gun is optional . Keep Parts A and B separate, recap and store the remaining unmixed epoxy as directed.
KEEP ONE IN THE TOOLBOX. KEEP ONE IN THE GARAGE. KEEP AOJEL READY BEFORE THE NEXT REPAIR ASKS FOR IT.
——————————————————-————— All the page content and images are original and copyrighted by AOJEL
Product details
| Main Specification | |
|---|---|
| Compatible Material | Plastic or Metal or Ceramic or Concrete or Aluminum or Alloy Steel |
| Included Components | 2-Part Epoxy Adhesive or Plunger or Mixing Spatula |
| Special Feature | Waterproof or Cast Iron or Load-Bearing or Heat Resistant to 392°F or Drillable After Cure or Longer Working Time Compatible Materials: Metal or Aluminum or Stainless Steel Finish After Cure: Drillable or Sandable or Fileable or Paintable Recommended Uses: Rigid structural repair for brackets or housings or frames or tools or pipes or fittings See more |
| Manufacturer | AOJEL |
| Unit Count | 1 Count |
| Item Form | Epoxy |
| Specific Uses For Product | Metal Repair Aluminum Repair Structural Repair Pipe Repair Tool Repair Automotive Repair Equipment Repair Casting Repair Bracket Repair Housing Repair See more |
| Brand | AOJEL |
| UPC | 199284869714 |
| Full Cure Time | 12-24 hours |
| Water Resistance Level | Waterproof |
| Item Package Quantity | 1 |
| Number of Pieces | 2 |
| Material | Epoxy Metal-Filled Epoxy |
| Colour | Silver & Beige |
| Global Trade Identification Number | 00199284869714 |
| Product information | |
| Volume | 50 ml |
| Technical Details | |
| Part Number | S300 |
| Model | S300 |
| Material Type | Epoxy Metal-Filled Epoxy |
| Viscosity Level | Medium |
| Others | |
| Other Special Features of the Product | Waterproof or Load-Bearing or Heat Resistant to 392°F or Drillable After Cure or Longer Working Time Compatible Materials: Metal or Aluminum or Cast Iron or Stainless Steel Finish After Cure: Drillable or Sandable or Fileable or Paintable Recommended Uses: Rigid structural repair for brackets or housings or frames or tools or pipes or fittings |
| Product Type | Metal Filled Epoxies |
| Container Type | Syringe |