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Start ShoppingPERMATEX 81878 Ultra Copper Silicone Gasket Sealant - High-Temperature Leak-Proof Sealant for Powersports Equipment
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Description
Ensure flawless sealing for critical engine components with PERMATEX's advanced Ultra Copper Silicone Gasket Sealant. This heavy-duty formula creates permanent bonds that withstand extreme temperatures, vibrations, and chemical exposure, making it essential for powersports equipment maintenance.
Key Features
- High-Temperature Resistance: Maintains integrity up to 600°F (315°C) for reliable performance in exhaust systems and engine compartments.
- Copper-Silicone Blend: Combines the flexibility of silicone with copper's conductivity for superior sealing in challenging environments.
- Chemical-Resistant: Resists oil, fuel, and coolant degradation for long-lasting protection against leaks.
- Easy Application: Smooth, pump-action formula spreads evenly for quick, mess-free installation.
Why Choose This Product
Engineers and mechanics rely on PERMATEX sealants for their unmatched durability and versatility. This product eliminates the need for replacement gaskets by creating a permanent, vibration-resistant seal. Ideal for powersports engines, transmissions, and exhaust systems, it reduces maintenance costs and downtime while ensuring optimal performance under extreme conditions. Its copper content enhances thermal conductivity, preventing overheating in critical components. Whether you're repairing or maintaining high-performance vehicles, this sealant delivers professional-grade results without the hassle of traditional gasket installations.
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Ensure flawless sealing for critical engine components with PERMATEX's advanced Ultra Copper Silicone Gasket Sealant. This heavy-duty formula creates permanent bonds that withstand extreme temperatures, vibrations, and chemical exposure, making it essential for powersports equipment maintenance.
Key Features
- High-Temperature Resistance: Maintains integrity up to 600°F (315°C) for reliable performance in exhaust systems and engine compartments.
- Copper-Silicone Blend: Combines the flexibility of silicone with copper's conductivity for superior sealing in challenging environments.
- Chemical-Resistant: Resists oil, fuel, and coolant degradation for long-lasting protection against leaks.
- Easy Application: Smooth, pump-action formula spreads evenly for quick, mess-free installation.
Why Choose This Product
Engineers and mechanics rely on PERMATEX sealants for their unmatched durability and versatility. This product eliminates the need for replacement gaskets by creating a permanent, vibration-resistant seal. Ideal for powersports engines, transmissions, and exhaust systems, it reduces maintenance costs and downtime while ensuring optimal performance under extreme conditions. Its copper content enhances thermal conductivity, preventing overheating in critical components. Whether you're repairing or maintaining high-performance vehicles, this sealant delivers professional-grade results without the hassle of traditional gasket installations.
| SKU | GMDC0AE5E8 |
|---|---|
| MPN | 81878 |
| UPC/GTIN | 686226818782 |
| Brand | PERMATEX |
| Category | Chemicals |
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| Make | Model | Years |
|---|---|---|
| All Years |
Frequently Asked Questions
Skin forms in 1 hour. Wait 24 hours before full torque and pressure testing.
Yes, excellent for head gaskets, especially aluminum heads. Sensor safe and won't cause pre-ignition.
Yes, formulated for high heat and resistant to gasoline, oil, and coolant.
Yes, copper formula handles 100°F higher temps and resists movement/shrinkage better.
Yes, designed as form-in-place replacement for most gaskets.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Clean rags
- Scraper or plastic putty knife
- Brake cleaner or solvent
- Applicator nozzle (included)
Pro Tips
- Clean surfaces with brake cleaner and dry completely
- Apply 1/16-1/8 inch bead
- Allow 1 hour before assembly, 24 hours before pressure testing
- Use on clean, dry surfaces only
Common Mistakes to Avoid
- Using on parts with active oil pressure before full cure
- Applying too thick a bead
- Not cleaning surfaces completely
- Installing immediately after application
Comparison vs Stock/OEM
Aftermarket performance replacement for OEM gaskets and basic RTV
Improvements
- 700°F temperature rating vs 500°F typical RTV
- Copper reinforced for zero shrinkage
- Resists fuel, oil, coolant, vibration better
- Sensor safe - won't foul electronics
Considerations
- More expensive than basic silicone
- Requires full 24hr cure for max performance
Durability & Warranty
Expected Lifespan
Engine life with proper install (100,000+ miles)
Warranty
Limited manufacturer warranty
Maintenance
Reapply every major engine service. Inspect for cracks during routine maintenance.
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