MECCANIXITY Heatsink Copper Sheet Shim
3.9Editor score
Pre adhesive adhesive tape backing
0.3mm thickness standard
5 sets per package
10 Best Copper Pad Shim Kit (October 2026) Expert Guide
Thermal management is critical for modern electronics and copper pad shim kits offer precise gap filling for efficient cooling. These kits help maintain safe operating temperatures for CPUs, GPUs, and other sensitive components under heavy loads.
We compared ten real products based on material quality, thickness variety, size compatibility, and user feedback. Our analysis focuses on pure copper shims designed for PC, console, and industrial cooling applications across diverse scenarios.
Each pick below shows key specs and real use cases so you can choose the right kit for your build. Note that prices change often so verify current listings before purchasing your thermal interface materials today.
Top 3 Picks for Best Copper Pad Shim Kit
Easycargo 100pcs 12 sizes 15mm Copper Pad Shim Kit
4.6Editor score
100pcs in 12 thicknesses
Copper C1100 material
15x15mm size standard
Easycargo 40pcs 6 Sizes 20mm Copper Pad Shim Thermal Assortment Kit
4.6Editor score
20x20mm larger size
40pcs total pieces
Copper C1100 material
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Top 10 Best Copper Pad Shim Kit in 2026 Compared
This side-by-side comparison highlights key specs for every product so you can match the right shim kit to your cooling needs quickly and confidently.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Easycargo 100pcs 12 sizes 15mm Copper Pad Shim Kit
100 pieces total
12 thickness options
15x15mm dimension
Copper C1100
4.6Editor score
Editor's Choice
Easycargo 40pcs 6 Sizes 20mm Copper Pad Shim Thermal Assortment Kit
40 pieces total
6 thickness options
20x20mm dimension
Copper C1100
4.6Editor score
Best Premium
20 x 20 x 1.2mm IC Chipset GPU CPU Thermal Heatsink
20 pieces total
1.2mm thickness
20x20mm dimension
Copper material
4.7Editor score
Copper Thermal Shim Kit
55 pieces total
11 thickness options
15x15mm dimension
Polished copper
4.7Editor score
Easycargo 4pcs 40mm Copper Pad Shim Thermal Kit
4 pieces total
0.5mm thickness
40x40mm dimension
Copper material
4.5Editor score
MECCANIXITY Heatsink Copper Sheet Shim
5 sets total
0.3mm thickness
20x20mm dimension
Adhesive tape
3.9Editor score
Easycargo 20pcs Heatsink Copper Pad Shims 15x15mm+ 3M 8810
20 pieces total
0.5mm thickness
15x15mm dimension
3M 8810 tape
4.3Editor score
PATIKIL Copper Heatsink Pad Shims
12 pieces total
0.3mm thickness
15x15mm dimension
Copper material
4.8Editor score
Leviton Copper Shims, For 16-18 Series
10 pieces total
Commercial grade
Cam-type connector
Not thermal shims
4.8Editor score
M METERXITY 3-Set Copper Shim Strip
3 sets total
6×1 inch size
Multiple thicknesses
DIY craft use
4.7Editor score
1. Easycargo 100pcs – Best Overall Copper Pad Shim Kit
Easycargo 100pcs 12 sizes 15mm Copper Pad Shim Kit
100 pieces total count
12 thickness variety
15x15mm size
Copper C1100
This kit delivers 100 copper shims across 12 thicknesses for precise thermal gap filling. It rates 4.6 stars and suits PC laptop GPU CPU cooling needs with C1100 copper conductivity.
Pros
- High piece count
- Wide thickness range
- Pure copper material
- Multiple device support
Cons
- May require sorting
- No adhesive backing
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The 15x15mm size fits most VRAM and SSD spots. With thicknesses from 0.1mm to 2mm, you can stack for exact clearance. High thermal conductivity supports safe chip temps under load.
Sorting 100 pieces takes time and no adhesive is included. You must apply paste or tape manually for secure fit. These trade-offs remain acceptable given the volume and material quality offered.
Buy this if you need bulk shims for multiple builds or repairs. It is the top pick for users wanting variety and pure copper performance without premium cost.
Wide Thickness Range for Precision Fit
Twelve thickness options let you stack shims to achieve exact gap clearance for any thermal interface scenario.
Pure Copper C1100 for High Conductivity
C1100 copper ensures 401W/mK thermal transfer so heat moves efficiently from chip to heatsink for stable temps.
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2. Easycargo 40pcs – Best Premium Copper Pad Shim Kit
Easycargo 40pcs 6 Sizes 20mm Copper Pad Shim Thermal Assortment Kit
40 pieces total count
6 thickness options
20x20mm size
Copper C1100
This assortment kit offers 40 copper shims in 20x20mm size for larger heatsink or gap zones. It rates 4.6 stars and uses C1100 copper for excellent thermal conductivity.
Pros
- Larger 20mm size
- C1100 copper material
- Low profile design
- PS5 NVMe support
Cons
- Fewer pieces than 100pc kit
- No adhesive backing
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The 20mm width suits broader CPU or GPU contact areas. Six thicknesses cover 0.3mm to 1.5mm so you avoid stacking. This reduces contact resistance for better cooling performance.
It contains fewer pieces than the 100pc option and lacks adhesive tape. You still need paste or tape for attachment. These limits are minor for users needing larger square pads.
Choose this if you need bigger shims for CPU or GPU heatsinks. It is the premium pick for those prioritizing size and material quality over sheer quantity.
Larger 20x20mm Contact Area
The 20mm square size fits larger components and reduces the need to stack multiple shims for a single gap.
Six Key Thicknesses for Quick Selection
Six common thicknesses streamline selection so you find the right fit without opening many options or sorting piles.
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3. 20 x 20 x 1.2mm – Best Single Thickness Shim Kit
20 x 20 x 1.2mm IC Chipset GPU CPU Thermal Heatsink
20 pieces total count
1.2mm fixed thickness
20x20mm size
Thermal pad included
This pack offers 20 copper shims at 1.2mm thickness with thermal pad for instant attachment. It rates 4.7 stars and fits tight spaces on GPU CPU or chipset.
Pros
- Includes thermal pad
- Compact 20mm size
- High conductivity copper
- Easy installation
Cons
- Single thickness option only
- Limited flexibility
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The 20x20mm size works well for IC chipsets. Copper base transfers heat while the thermal pad simplifies installation without extra paste. It supports safe chip temps effectively.
You get only one thickness so it lacks flexibility for varied gaps. It fits a specific clearance need and may not help elsewhere. This limits reuse across diverse projects.
Buy this if you need fixed thickness pads for known gaps. It is ideal for quick chipset or IC cooling where 1.2mm is the correct requirement.
Built-in Thermal Pad for Easy Install
The included thermal pad backing means you can apply the shim without adding extra paste for quick setup.
Compact Design for Tight Spaces
The 20x20mm footprint fits into crowded PCB areas where larger pads would interfere with nearby components.
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4. Copper Thermal Shim Kit – Best Mid-Range Variety Kit
Copper Thermal Shim Kit
55 pieces total count
11 thickness options
15x15mm size
Polished copper finish
This kit includes 55 polished copper shims in 11 thicknesses from 0.1mm to 2.0mm. It rates high for laptop GPU CPU cooling with 15x15mm universal size.
Pros
- 11 thickness options
- Polished surface
- Universal compatibility
- Affordable price
Cons
- No adhesive included
- Sorting may take time
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The polished copper ensures good contact and heat transfer. Eleven thicknesses cover most gaps without stacking. It fits laptops gaming consoles and desktop components easily.
You must apply paste or tape for attachment. Sorting 55 pieces takes time but yields precise fits. These trade-offs are minor compared to the variety provided at this price.
Choose this if you need many thickness options at low cost. It is ideal for DIYers wanting precision without buying multiple kits.
Polished Copper for Better Contact
Polished copper surfaces maximize thermal interface contact so heat moves efficiently from chip to heatsink.
11 Thicknesses for Versatility
With 11 thickness options you can match exact gaps across multiple devices or projects without buying new kits.
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5. Easycargo 4pcs 40mm – Best Large Industrial Shim Kit
Easycargo 4pcs 40mm Copper Pad Shim Thermal Kit
4 pieces total count
0.5mm thickness
40x40mm size
400 W/m-k conductivity
This kit offers 4 copper shims at 40x40mm for large industrial or console cooling needs. It rates 4.5 stars and supports PS3 3D Printer and Peltier modules.
Pros
- Large 40mm size
- Industrial grade use
- Thermal conductivity
- PS3 3D Printer support
Cons
- Very few pieces
- Single thickness
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The 40mm square size fits larger heatsink areas. Copper material ensures 400 W/m-k conductivity. It helps maintain safe temps under sustained load.
You get only 4 pieces and one thickness so it lacks versatility. It suits fixed clearance needs in larger hardware. This limits general use across diverse PC projects.
Choose this if you need big shims for PS3 or printers. It is ideal for users needing 40mm pads for industrial hardware cooling.
Large 40x40mm Size for Industrial Use
The 40mm square pad suits larger hardware like PS3 consoles or industrial Peltier modules where standard sizes do not fit.
High Thermal Conductivity for Load Management
Copper ensures 400 W/m-k conductivity so heat moves away efficiently during sustained industrial or gaming workloads.
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6. MECCANIXITY Heatsink Copper Sheet Shim – Best Budget Copper Pad Shim Kit
MECCANIXITY Heatsink Copper Sheet Shim
5 sets total count
0.3mm thickness
20x20mm size
Conductive adhesive backing
This kit includes 5 copper sheets at 0.3mm with thermal adhesive tape. It rates 3.9 stars and suits GPU CPU cooling on desktops and notebooks.
Pros
- Conductive adhesive backing
- Easy installation
- Low price
- 20mm size
Cons
- Lower overall rating
- Single thickness
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The adhesive backing simplifies installation without paste. Copper transfers heat to nearby components effectively. It fits small chipsets and memory modules easily.
Overall ratings are lower and you get only one thickness. Tape may degrade after heat cycles and limits reuse. These trade-offs fit budget users needing quick solutions.
Buy this for low cost installs with adhesive. It suits users wanting quick CPU cooling for notebooks with minimal effort.
Thermal Conductive Adhesive Backing
Thermal adhesive backing lets you attach shims quickly without applying extra paste for faster setup.
Compact 20mm Design
The 20x20mm size fits small PCB zones where larger pads would interfere with nearby components on notebooks.
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7. Easycargo 20pcs – Best Adhesive Copper Pad Shim Kit
Easycargo 20pcs Heatsink Copper Pad Shims 15x15mm+ 3M 8810
20 pieces total count
0.5mm thickness
15x15mm size
3M 8810 tape
This kit offers 20 copper shims at 0.5mm with 3M 8810 thermal adhesive. It rates 4.3 stars and suits laptop GPU CPU cooling without extra paste.
Pros
- 3M 8810 tape
- High adhesive quality
- Pre-applied backing
- 20 piece count
Cons
- Fixed 0.5mm thickness
- Limited gap flexibility
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The 3M backing ensures strong attachment. Copper conducts heat well for 15x15mm pads. It fits RAM and chipset spots effectively.
You get only 0.5mm thickness so stacking may be needed. This adds steps but keeps installation secure. These limits suit users preferring adhesive for reliability.
Choose this if you trust 3M adhesive for clean installs. It suits users needing fixed thickness and secure thermal interface.
3M 8810 Thermal Adhesive for Reliability
3M 8810 backing ensures strong secure thermal contact so shims stay in place under heat cycles.
Pre-Applied Tape for Fast Install
Pre-applied tape means you peel and stick without adding paste or extra tools for faster setup.
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8. PATIKIL Copper Heatsink Pad Shims – Best Value Copper Pad Shim Kit
PATIKIL Copper Heatsink Pad Shims
12 pieces total count
0.3mm thickness
15x15mm size
Bright smooth surface
This pack offers 12 copper shims at 0.3mm with smooth burr-free edges. It rates 4.8 stars and suits laptop desktop GPU CPU cooling.
Pros
- Smooth bright surface
- High rating
- No burrs
- 12 piece pack
Cons
- Single thickness
- No adhesive
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Bright smooth surface ensures better contact. Copper conducts heat well for safe chip temps. It fits IC chipsets and memory modules easily.
You get only 0.3mm thickness and no adhesive. Paste or tape is needed for secure attachment. These trade-offs are minor given the high ratings.
Choose this for high quality shims at value. It suits users wanting clean edges for reliable thermal interface.
Smooth Bright Surface for Better Contact
Smooth burr-free edges maximize contact area so heat moves efficiently from chip to heatsink.
High Rating for Quality Assurance
A 4.8 star rating reflects user trust in edge quality and thermal transfer across many builds.
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9. Leviton Copper Shims – Alternative Commercial Grade Shim Kit
Leviton Copper Shims, For 16-18 Series
10 pieces total count
Commercial grade
Cam-type connector
Not for thermal use
This pack offers 10 commercial grade copper shims for cam-type connectors. It rates 4.8 stars but fits electrical use not thermal cooling.
Pros
- Commercial grade
- Durable material
- Color-coded options
- High rating
Cons
- Not thermal shims
- Wrong category use
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Copper material is durable with color coding for phase ID. However shims are not designed for heat transfer in electronics. They are for electrical connector needs.
Using them for cooling may lead to failure. Thermal conductivity is not specified. This limits relevance to electrical repairs.
Avoid for thermal cooling. It suits electrical repair users needing commercial grade copper shims for connectors.
Commercial Grade Durability
Commercial grade copper ensures robust connectors but not optimized for thermal conductivity in electronics.
Color-Coded Insulators
Color-coded insulators aid phase identification in electrical use but offer no benefit for cooling thermal gaps.
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10. M METERXITY 3-Set Copper Shim Strip – Best DIY Copper Strip Kit
M METERXITY 3-Set Copper Shim Strip
3 sets total count
0.002-0.016 inch
6×1 inch size
DIY craft focus
This kit offers 3 copper strip sets in multiple thicknesses for DIY cutting. It rates 4.7 stars and suits crafts repairs and precise filling needs.
Pros
- Custom cut sizes
- Multiple thicknesses
- High conductivity
- DIY versatile
Cons
- Requires cutting
- Not pre cut
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Copper conducts well and strips can be cut to size. It fits diverse projects including electronics repairs. Brushed edges simplify handling.
You must cut strips yourself which adds time. Pre-cut sizes would simplify thermal use. This limits quick installs but boosts flexibility.
Choose this for crafters wanting custom size shims. It suits DIY users needing copper for varied repairs.
DIY Custom Cut for Versatility
Strips can be cut to any shape so you customize exact sizes for unique thermal gap needs.
Brushed Edges for Safe Handling
Brushed and polished edges prevent sharp burrs making strips safer to handle during cutting and installation.
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Buying Guide – How to Choose the Best Copper Pad Shim Kit
Selecting the right copper shim kit requires knowing thickness, size, and adhesive needs for your thermal project.
Material Grade and Purity
Pure copper like C1100 offers 401W/mK conductivity so heat moves fast from chip to heatsink. Avoid lower alloys if you need maximum thermal performance.
Choose C1100 for high load PCs or consoles.
Thickness Variety and Range
Kits with many thicknesses let you stack for exact gaps. Single thickness options save sorting but reduce flexibility.
Pick multi-thickness kits for diverse projects and single thickness for known gaps.
Size Dimensions
15x15mm suits RAM and M.2 gaps. 20x20mm covers CPU GPU zones. Larger 40mm pads fit consoles or industrial modules.
Measure your gap before buying size.
Adhesive vs Non-Adhesive
Adhesive tape speeds installation but may degrade over heat cycles. Non-adhesive requires paste or separate tape.
Pick adhesive for quick installs and non-adhesive for high reliability.
Piece Count
More pieces let you build multiple gaps without repurchasing. Small packs suit single repair jobs.
Choose large kits for builders and small kits for one-time use.
Finish Quality
Polished or smooth edges maximize thermal contact. Rough edges trap air and reduce cooling.
Inspect finish before purchase for best contact.
Use Case Specifics
Match the kit to your device. PC builders need many thicknesses. Industrial users need large pads.
Select based on your device type and clearance needs.
Budget and Value
Price per piece matters for volume projects. Higher cost often means better material or adhesive quality.
Balance cost with quality to ensure long term performance.
How to Use and Care for Your Copper Pad Shim Kit
First clean the chip surface with alcohol and a microfiber cloth to remove dust or old paste. A clean surface ensures better thermal contact and longer shim life.
Select the right thickness or stack shims for exact gap. Apply paste or thermal tape if using non-adhesive pads. Align the shim precisely before pressing down.
After installation monitor temps under load. Copper pads can darken with heat but cooling stays effective. Avoid bending shims sharply as edges may crack over time.
Frequently Asked Questions
Do copper shim kits work for GPU VRAM cooling?
Yes copper shims fill gaps between VRAM and heatsinks to conduct heat away. Match thickness to the gap and use paste if the shim lacks adhesive for secure contact.
Can I stack multiple copper shims to adjust thickness?
Yes stacking thin shims helps reach exact gaps. Clean each shim surface first for better thermal contact and use paste between layers if needed for optimal transfer.
Do copper shims need adhesive or thermal paste?
Non-adhesive shims need thermal paste or tape for secure attachment. Adhesive shims have backing that simplifies install but may degrade after heat cycles.
What thickness copper shim is best for PS5 M.2 SSD?
Check the manual for exact gap. Often 0.5mm to 1mm works. Use the thickest that fits without stressing the SSD for safe thermal contact.
Can I use copper shims for laptop CPU cooling?
Yes but ensure the gap matches exactly. Too thick shims may bend cooling pipes. Measure carefully before buying for safe thermal transfer and stable temps.
Do copper shims lose cooling over time?
Copper does not degrade like thermal paste. Adhesive may weaken with heat cycles. Replace adhesive pads if they peel to maintain safe thermal contact.
Are copper shims safe for consumer electronics?
Yes copper is safe if properly installed. Avoid electrical shorts by ensuring shims stay on designated thermal zones and are insulated from non thermal parts.
How long do copper shim kits last?
Shims last many years without performance loss. Adhesive pads may need replacement after a few years. Non-adhesive shims remain safe with paste or tape.
Final Thoughts on Choosing the Best Copper Pad Shim Kit
The Easycargo 100pcs kit leads as the best overall for its piece count and thickness range. It fits most PC console and industrial cooling tasks with C1100 copper conductivity.
For budget installs with adhesive choose MECCANIXITY. For larger pads pick Easycargo 40pcs. Each pick matches a distinct project need and gap size.
Prices and stock vary so check current listings before buying. Verify thickness and size to match your exact thermal gaps for safe cooling performance.