Engine coolant system pipe threads are subjected to medium pressure and high temperature (up to 120∘C or more). Because these components often need to be disassembled for repairs (e.g., thermostat, radiator hose replacement), the sealant must provide a Medium Strength seal that resists pressure and heat while allowing for future non-destructive removal.
INCURE ProGrip™ 206 Medium Strength Thread Sealant
The INCURE ProGrip™ 206 Thread Sealant is the ideal solution. It is specifically formulated to handle high-pressure applications and features excellent temperature resistance, all while maintaining a medium strength bond suitable for serviceable engine components.
| Key Feature | Performance for Engine Coolant Pipes |
| Medium Strength (Yellow) | Provides a secure, pressure-tight seal that prevents loosening from engine vibration but still allows for disassembly with standard hand tools when repairs are needed. |
| High Temperature Range | With a temperature range of up to 150∘C (302∘F), it safely handles the operational heat of engine coolant systems. |
| Max Pressure Rating | Seals against high pressures, suitable for pressurized cooling systems (up to 69 MPa or 10,000 psi). |
| Low Viscosity | Its low viscosity ensures easy application and penetration into fine or tapered pipe threads, creating a full hydraulic seal. |
Application Steps: Sealing Coolant System Threads
For maximum reliability and a serviceable joint, follow these steps:
- Preparation: Clean both the male and female threads thoroughly to remove all old sealant, oil, grease, and coolant residue. Use a cleaner (e.g., acetone) and wipe dry.
- Application: Apply a continuous, thin bead of ProGrip™ 206 around the male thread, skipping the first thread. Ensure full coverage over the engaged threads.
- Assembly: Immediately thread the pipe or fitting into the housing and tighten to the manufacturer’s specified torque.
- Curing: Allow the sealant to cure for a minimum of 24 hours to reach full chemical resistance and sealing strength before filling the system with coolant or subjecting it to operational pressure and heat.