High Temperature Grease Types: Lithium Complex vs Polyurea vs Bentonite vs PFPE (Full Comparison Guide)

Most buyers and maintenance engineers confuse different types of high-temperature grease, leading to wrong selection, shortened component life and increased maintenance costs. Different thickener systems determine the maximum temperature resistance, service life, carbon resistance and applicable scenarios of high-temperature grease. This professional comparison guide helps you quickly match the best grease for your equipment.

1. Lithium Complex High Temperature Grease

Lithium complex grease is the most cost-effective mainstream high-temperature grease. Its dropping point reaches 260℃, supporting continuous operation below 180℃. It balances anti-wear, water resistance and oxidation resistance, suitable for general industrial high-temperature bearings, conveyor lines and medium-heat mechanical parts. It is the best choice for conventional high-temperature industrial scenarios with high cost performance.

2. Polyurea High Temperature Grease

Polyurea grease features outstanding long-term oxidation resistance and ultra-long service life. It has stable performance under high-speed and high-temperature conditions, hardly producing oil sludge and carbon deposits. It is widely used in high-speed motor bearings, precision fan equipment and long-running automated production lines, greatly reducing maintenance frequency.

3. Bentonite (Clay) High Temperature Grease

Bentonite grease has no fixed dropping point and will not melt at high temperature. It can withstand extreme temperature up to 260℃ and above, with excellent non-carbonization performance. It is specially used for intermittent high-temperature equipment, furnace door bearings and high-heat static operating parts where ordinary grease fails easily.

4. PFPE Full Synthetic High Temperature Grease

PFPE grease is top-tier extreme high-temperature lubricant, chemically inert and non-toxic. It can work stably at 300℃–350℃, with zero carbon deposition and ultra-low volatilization. It is mainly used for high-end precision equipment, aerospace parts, high-temperature vacuum machinery and food-grade extreme heat scenarios.

Each type of high-temperature grease has its own advantages. We provide targeted selection solutions according to your equipment temperature, speed and load conditions.