MOLYKOTE G Paste is a gray-black, NLGI Grade 0–1 molybdenum disulfide (MoS₂) solid lubricant paste manufactured by Molykote (DuPont). It is formulated with high-concentration MoS₂, mineral oil and lithium soap thickener, specifically designed for anti-seize, anti-galling and run-in lubrication of press-fitted and heavy-load metal assemblies
Even after the base mineral oil carbonizes above 120°C, the solid MoS₂ content maintains lubricity up to 400°C (up to 1100°C in oxygen-free environment), effectively preventing fretting wear, friction corrosion and cold welding of metal surfaces. Apply a thin, even coat to cleaned/degreased surfaces using a brush, cloth or chamois (stir well before use as MoS₂ may settle). Contains no intentionally added PFAS.
| Property | Value | Test Method / Note |
|---|---|---|
| Appearance (Uncured) | Gray black (灰黑色) | — |
| Thickener | Lithium Soap | — |
| Solid Lubricant | Molybdenum Disulfide (MoS₂) >60% | — |
| Base Oil | Mineral Oil | — |
| NLGI Consistency Grade | 0 – 1 | — |
| Worked Penetration (60 strokes) | 310 – 360 mm/10 | JIS K 2220 |
| Density @ 20°C | 1.86 g/cm³ | — |
| Service Temp — Base Oil | -20 to +120 °C | — |
| Solid Lubricant Temp Limit | up to 400 °C (air), 1100 °C (oxygen-free) | — |
| Coefficient of Friction (press-fit) | approx. 0.10 – 0.12 | Steel/Steel, 69 MPa |
| Four-ball Wear Scar | 0.91 mm | ASTM D2266 (1740 rpm, 392 N, 1 h) |
| Falex Weld Load | 14,700 N | ASTM D2670 |
| Copper Corrosion (100°C, 24h) | 1a | JIS K 2220 |
| Shelf Life (unopened) | 36 months | Cool, dark storage |
| Typical Packaging | 100 g tube / 500 g can / 2 kg can / 6 kg | — |
Unlike conventional greases, G Paste contains >60% solid lubricants delivering extreme load-carrying capacity (Falex weld load 14,700 N; four-ball wear scar 0.91 mm @ 392 N). Coefficient of friction in press-fit test is approx. 0.10–0.12, significantly reducing interference-fit assembly force and eliminating stick-slip. Passes copper strip corrosion test (1a @ 100°C/24h). While the base oil service range is -20 to +120°C, solid MoS₂ extends anti-seize protection to 400°C. High density (1.86 g/cm³) ensures tenacious adhesion.
Typical applications include — anti-seize and ease-of-disassembly lubrication for bolts, nuts and high-temp flanged threaded connections; press-fit / interference-fit lubrication of shafts into bearing housings or bushings; run-in / break-in lubricant for new equipment and gearboxes; low-speed heavy-load sliding surfaces such as machine tool ways, splines and worms; extreme-pressure lubrication in metalworking (stamping, drawing, tapping); prevention of fretting corrosion and cold welding on static metal joints.
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