Permatex® High Temperature Thread Sealant
Permatex's High Temperature Thread Sealant locks and seals threaded fittings with superior reliability. This premium thread sealant resists leakage, vibration loosening, moisture, hydraulic fluids and diesel fuels while providing excellent performance across extreme temperature ranges.
Key Features
- Superior Sealing Performance: Locks and seals threaded fittings to prevent leakage from vibration, temperature cycling, and extreme pressures
- High Temperature Resistance: Operates effectively in temperature ranges from -65°F to 400°F (-54°C to 204°C)
- Thread Lubrication: Lubricates threads for easy assembly and disassembly
- PTFE Formula: Contains PTFE for enhanced anti-friction properties and chemical resistance
- No Shredding: Won't shred or wear like Teflon tape
- Repositionable: Parts may be repositioned up to 4 hours after application
- OEM Specified: An OEM-specified product designed for professional applications
- High Pressure Rating: Withstands up to 10,000 psi for demanding applications
Technical Specifications
- Package Size: 50 mL tube
- Color: White
- Full Cure Time: 24 hours at 72°F
- Working Time: Up to 4 hours for repositioning
- Chemical Resistance: Resistant to hydraulic fluids, diesel fuels, and moisture
Installation Notes
- Seals threaded metal fittings on hydraulic, pneumatic, fuel, and cooling systems
- Not recommended for plastics or rubber components
- Apply to leading threads of male fitting, leaving first thread free of sealant
- Exclusively formulated for metal, tapered pipe thread fittings


