Molykote® 3402C LF - Solid Lubricant Coating for Extreme Load & Corrosion Resistance in Automotive
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Molykote® 3402C LF is a high-performance dry film lubricant coating engineered for metal surfaces subjected to extreme mechanical stress, high loads, and corrosive environments. It combines molybdenum disulfide (MoS₂) with a high-performance binder system to form a durable, low-friction film that prevents wear, stick-slip, and oxidation. Once applied, the air-drying coating cures into a robust solid layer, providing long-lasting lubrication even where traditional greases or oils cannot be used. Typical uses include brake components, springs, fasteners, and sliding mechanisms in automotive, aerospace, and industrial machinery.
products parameters
| Composition: | Silicone Grease |
| Appearance: | Gray |
| Viscosity At 23°C: | 32 S |
| Density At 20°C: | 1.06 G/ml |
| Flash Point: | 15°C |
| Service Temperature Range: | -200 To 310°C |
| Packaging: | 1kg |
key features
Superior Lubricity - The coating delivers a low coefficient of friction of approximately 0.05–0.08 under a 1,000 N load, confirmed through pin-on-disk wear testing. Its molybdenum disulfide particles create a solid lubricating layer that maintains film integrity under oscillating or sliding contact. This minimizes wear and ensures smooth mechanical operation even under boundary lubrication conditions, reducing mechanical noise and energy loss.
Corrosion Resistance - Molykote® 3402C LF provides exceptional protection against oxidation and environmental corrosion. In salt spray tests (ASTM B117, 500 hours), coated steel samples exhibited no red rust formation, proving its efficiency in protecting exposed metal parts. The film acts as a chemical barrier, isolating surfaces from moisture, salts, and industrial contaminants to maintain long-term structural integrity.
Air-Curing Performance - The coating dries and cures effectively at room temperature, achieving complete film formation within 30 minutes. Adhesion tests (cross-hatch method) rated the cured layer at 5B, indicating excellent substrate bonding. This fast-curing process eliminates the need for heat treatment, allowing flexible application on temperature-sensitive components while maintaining consistent hardness and film stability.
Wear and Pressure Endurance - Laboratory evaluations under 2,000 N contact load demonstrated outstanding wear resistance with no surface scarring or film breakdown. The coating maintained a consistent lubrication film after 50,000 sliding cycles, ensuring protection under heavy-load or repetitive-motion conditions. Its performance under high-pressure contact prevents micro-welding and surface fatigue.
PFAS-Free Formulation - Molykote® 3402C LF contains no intentionally added PTFE or perfluoroalkyl substances, aligning with current global environmental and safety regulations. Material analysis confirmed full compliance with REACH and RoHS standards. The absence of fluorinated additives ensures safe handling and disposal, without compromising the coating’s mechanical or thermal performance.
Automotive Assemblies - Molykote® 3402C LF is widely used for automotive fasteners, gears, and sliding components exposed to high load and temperature variations. Torque consistency tests showed a 25% reduction in friction coefficient deviation, improving assembly accuracy and minimizing bolt seizure during maintenance.
Aerospace Mechanisms - The coating performs reliably under the high mechanical stresses and temperature extremes of aerospace systems. In vibration endurance testing, treated parts maintained friction stability for over 200 hours, ensuring precision movement and wear protection in aerospace actuators and linkages.
Industrial Equipment - It is applied to machine joints, bearings, and couplings that operate in dusty or corrosive environments. Continuous operation testing under abrasive exposure demonstrated a 60% reduction in wear depth compared with untreated metal surfaces, enhancing machine reliability and extending service life.
Metalworking Tools - The dry film lubricant minimizes friction during metal forming and assembly operations. In stamping trials, die surface life increased by 45%, with reduced sticking and smoother part ejection. The coating’s film stability at 300°C makes it suitable for high-heat metal processing applications.
Maintenance and Assembly - Molykote® 3402C LF provides long-term protection for bolts, threaded connections, and sliding assemblies requiring clean, oil-free lubrication. Maintenance performance studies showed that treated fasteners could be loosened easily after 1,000 hours of exposure to 200°C, confirming its strong anti-seize properties.