Top Flat Copper Washers 100 Pcs Assortment Kit Heat Resistant Sealing Gaskets For Automotive Sump Plugs Sizes M4 M5 M6 M8 M10 M12 M14 Universal Fit Metal Sealant For Garage Mechs Fix Leaks And Keep Engine Safe With Solid Hold As The Real Deal

100pc Copper Flat Washers Auto Sump Seal For High Temp Cars
✔️ Sizes M4 M14 Heat 350 Deg Sump Injector Pump Fuel System Fits All

This set holds one hundred flat copper rings for vehicle maintenance work.
You install them on drain plugs to stop oil and fuel leaking from the case.
The metal handles heat well during normal engine operation

✅ Made from pure red copper for better sealing strength and durability
✅ Includes metric sizes starting from four point up to fourteen
✅ Resists temperatures up to three hundred degrees celsius easily
✅ Seals common rail injectors and pump housing for steady performance

💡 Why Does Soft Annealed Copper Better Resist High Temperature Leaks?
- The soft metal deforms to fill gaps better than steel washers
- Prevents leaks from occurring due to loose or vibration
- Material withstands heat cycles without losing its shape
- Used on engines, hydraulic systems, and general machinery tasks

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