3M™ Thread Sealant 4291
Rugged water-based thread sealant designed to withstand the harshest engine environments
3M™ Thread Sealant 4291 is a water-based product designed to be pre-applied to threaded fasteners. It has excellent resistance to automotive fluids and can withstand high temperatures and pressures. Typical applications are threaded fasteners for the engine compartment.
Advantages
- Environmental resistance to heat and automotive fluids
- Can be used on both pipe and straight heads
- Extended shelf life (12 months on coated fasteners)
- Water-based sealants with no VOCs
Performance Results
- Toluene (room temperature): No leaks
- Gasoline (room temperature): No leaks
- Motor oil (300°F/149°C): No leaks
- Transmission fluid (300°F/149°C): No leaks
- Anti-freeze (266°F/130°C): No leaks
- Brake fluid (300°F/149°C): No leaks
- Diesel fuel #2 (room temperature): No leaks
- Hot water (200°F/93°C): No leaks
- Gasoline (room temperature): 150 psi / no leaks
- Motor oil (300°F/149°C): 150 psi / no leaks
- Transmission fluid (300°F/149°C): 150 psi / no leaks
- Anti-freeze (266°F/130°C): 150 psi / no leaks
- Hot water (200°F/93°C): 150 psi / no leaks
- 1200+ psi (84+ kg/cm): No leaks
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