MOLYKOTE® EM-30L Grease – Delivering Durable and Reliable Lubrication for Precision Plastic Components

In modern industrial and consumer product design, the use of plastic components is increasingly widespread, ranging from adjustment gears in automotive interiors to silent slides in home appliances, and even precision knobs in audio equipment. However, selecting the right grease for these plastic components is a significant challenge. Inappropriate lubricants can lead to plastic stress cracking, swelling, or performance failure. MOLYKOTE® EM-30L Grease, developed by DuPont, is a professional solution to this challenge, earning the trust of numerous engineers with its exceptional compatibility and long-term stability.

A renowned automotive parts manufacturer was seeking a grease for the window regulators of its new electric vehicles. The regulator contained a mixed structure of various engineering plastic gears and metal bearings. The challenges they faced included:

• Material Compatibility:​ Certain components in traditional greases might react with plastics, causing softening, embrittlement, or cracking.
• Noise Control:​ Low torque and quiet operation were required, especially during startup and running in low-temperature environments.
• Longevity and Durability:​ The components needed to function stably throughout the vehicle's lifespan, requiring the grease to have minimal evaporation and oil separation to prevent drying out or contaminating surrounding components.
• Environmental and Safety:​ The product needed to meet strict environmental and safety standards, such as being silicone-free to prevent contamination of subsequent electronic processes.

After rigorous testing and evaluation, the manufacturer ultimately selected MOLYKOTE® EM-30L Grease. The advantages of this grease perfectly matched their requirements:

• Broad Material Compatibility:​ EM-30L is compatible with most plastics, safely used on plastic/plastic, plastic/metal, and metal/metal contact surfaces, completely eliminating the risk of plastic component failure due to lubricants.
• Excellent Low-Temperature Performance:​ Its operating temperature range extends as low as -45°C. Typical data shows a starting torque of only 110 mNm at -40°C, ensuring smooth and quiet window operation even in harsh winter conditions.
• Long Service Life:​ Extremely low evaporation loss (0.4% at 99°C for 22 hours) and oil separation characteristics (5.0% at 100°C for 24 hours) mean the grease is less prone to drying out or degrading, providing stable lubrication performance over time and reducing maintenance needs.
• High Reliability and Cleanliness:​ Being silicone-free avoids contact point failure issues. Its low bleed characteristics maintain cleanliness at the application point, making it ideal for precision equipment requiring high cleanliness.
• Effective Anti-Wear Protection:​ Containing PTFE solid lubricant, it provides extra protection even under heavy loads (Four-Ball Weld Load up to 3,730N), reducing component wear.

Based on its outstanding performance, MOLYKOTE® EM-30L is not only suitable for the aforementioned automotive components but also widely used in:

• Home Appliance Industry:​ Washer door hinges, dishwasher rollers, oven timer gears, air conditioner louver motor gears, etc.
• Office Equipment:​ Printer cartridge slides, scanner modules, moving parts in copiers, etc.
• Precision Electronics:​ Knobs on audio equipment, focus mechanisms in camera modules, slides in precision instruments, etc.

MOLYKOTE® EM-30L Grease is not merely a lubricant; it is a critical engineering material that ensures the long-term, quiet, and reliable operation of complex mechanisms containing plastic components. Its proven performance parameters and broad applicability make it an ideal choice for designers and engineers facing the lubrication challenges of modern products. Choosing EM-30L means choosing the assurance of quality and reliability backed by the DuPont brand.