MOLYKOTE® EM-D110 Grease

MOLYKOTE® EM-D110 Grease is built on a very high-viscosity polyalphaolefin (PAO) base oil (≈ 9,850 mm²/s at 40 °C) thickened with a lithium soap system and reinforced with PTFE and other solid lubricants.  This combination produces a soft NLGI 0–1 grease that flows enough to wet surfaces thoroughly but remains where it is applied, even on vertical spline teeth and enclosed plastic gear sets.

The unusually high oil viscosity builds a resilient, energy-absorbing film between mating parts. In applications like driveshaft splines, that helps cut down on “clunk” or harsh feedback when torque reverses.  In plastic gear trains, the same thick film and PTFE solids smooth out tooth engagement and reduce whine and chatter at operating speed. The formulation is explicitly described as “developed for plastic components” and “compatible with most plastics,” which makes it suitable for gearboxes, sliders, and actuators built from engineering thermoplastics.

EM-D110 operates over a typical service temperature range of about -10 °C to 150 °C, covering most interior and many under-body locations where plastic mechanisms are used.  Low seepage is a design point: the grease is intended for “places wherein cleanliness is required,” helping avoid oil migration onto optics, contacts, or friction surfaces that must remain dry.  Importantly, the grease contains no silicone, reducing the risk of contact issues in nearby switches, relays, or connectors that can be contaminated by airborne or migrating silicone oils.

For OEMs, Tier suppliers, and design engineers, EM-D110 is a good fit when you need a plastic-safe, high-viscosity, noise-damping grease for splines, plastic gears, and mechanisms where customer-perceived feel and sound are just as important as pure lubrication.