MOLYKOTE GN
Harmonization Code : 3403.19 | Lubricating Preparations (With 70% or More Petroleum Oils) For Automotive and Other Uses
Main features
- Mineral-Oil Solid-Lubricant Assembly Paste
- 0.08 Press-Fit Friction Coefficient
- 2,800 N Four-Ball Weld Load
Product Description
MOLYKOTE® G-N Plus Paste is a black mineral-oil solid-lubricant paste for assembly, press fitting, running-in, and low-motion lubrication of metal components. The supplier reports an ISO 2137 unworked penetration of 280–310 mm/10, a 2,800 N four-ball weld load, an Almen-Wieland OK load above 20,000 N, and a press-fit coefficient of friction of 0.08 with no chatter. Solid-lubricant temperature guidance extends from -25°C to 450°C and up to 630°C with reduced air access; these limits do not imply unchanged carrier or paste properties throughout the range. Apply a thin layer to clean contact surfaces, rub it into the metal to improve adhesion, and do not mix it with greases or oils.
Key features
- High-load bench performance: DIN 51350 four-ball weld load of 2,800 N and Almen-Wieland OK load above 20,000 N.
- Controlled friction: Press-fit coefficient of friction of 0.08 with no chatter; screw-test values of 0.12 at the thread and 0.06 under the head.
- Solid-lubricant temperature guidance: -25°C to 450°C, or up to 630°C with reduced air access, based on the temperature resistance of the solid lubricants.
- Wear and water-resistance data: 0.75 mm wear scar under an 800 N four-ball load and DIN 51807 static water-resistance rating of 2-90.
- High surface coverage: Supplier-stated covering capacity of 40 m²/kg when applied as a controlled thin film.
- Fluorinated-material statement: Formulated with no intentional PTFE or other PFAS.
Applications / Suitable for
- Press-fit assembly and fitting of machine elements, bearings, washers, wheels, flanges, and bolts
- Running-in lubrication for new machines and gearboxes
- Threaded spindles, splined shafts, toothed gears, worm gears, transmission gears, and screws
- Valves, pumps, machine-tool guides, and components with rare or slight movement
- Drilling, sawing, and thread-cutting operations
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
MOLYKOTE® G-N Plus Paste
A black mineral-oil paste containing solid lubricants and a thickener for assembly, press fitting, running-in, and low-motion lubrication of metallic components. Its product-specific load and friction data support evaluation where high contact pressure, controlled assembly friction, stick-slip avoidance, fretting protection, and later dismantling are important.
MOLYKOTE® G-N Plus Paste is a black solid-lubricant paste for assembly and running-in of metal components.
As-supplied paste properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product form | Solid-lubricant paste | — | Mineral-oil carrier with solid lubricants and thickener |
| Color | Black | — | Typical commercial appearance |
| NLGI grade | 1–2 | — | Current supplier product classification |
| Unworked penetration | 280–310 | mm/10 | ISO 2137 |
| Density | 1.35 | g/ml | ISO 2811 at 20°C |
| Surface-covering capacity | 40 | m²/kg | Supplier-stated characteristic |
| Intentional PTFE / PFAS | None | — | Supplier formulation statement |
Typical values and supplier classifications are not specification limits. Confirm the required delivery form, surface finish, and application quantity for the intended assembly process.
Load, friction, and temperature performance
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Solid-lubricant temperature guidance | -25 to +450 | °C | Temperature resistance of the solid lubricants |
| Reduced-air temperature guidance | Up to +630 | °C | Temperature resistance of the solid lubricants with reduced air access |
| Four-ball weld load | 2,800 | N | DIN 51350 part 4 |
| Four-ball wear scar | 0.75 | mm | DIN 51350 part 5; 800 N load |
| Almen-Wieland OK load | >20,000 | N | Almen-Wieland machine |
| Almen-Wieland frictional force | 2,600 | N | Almen-Wieland machine |
| Press-fit coefficient of friction | 0.08; no chatter | µ | Press-fit test |
| Screw-test coefficient — thread | 0.12 | µ | Erichsen test; M12, class 8.8, blackened surface |
| Screw-test coefficient — head | 0.06 | µ | Erichsen test; M12, class 8.8, blackened surface |
| Static water resistance | 2-90 | rating | DIN 51807 part 1 |
The temperature figures describe the resistance of the solid lubricants and do not establish unchanged carrier-oil, consistency, friction, wear, or service-life performance across the full range. Bench results remain specific to their methods and conditions.
Apply a controlled film to clean metal surfaces
Prepare the contact area before applying the paste. The supplier recommends a thin, worked-in film rather than the larger quantities associated with conventional grease lubrication.
Use a thin, uniform film and work the paste into the cleaned metal surface rather than applying it as a bulk grease fill.
Store between 0°C and 40°C in the original unopened container. Usable life is 60 months from the date of production. Review the current safety data and container label before handling; use local exhaust ventilation and appropriate protective gloves and eye/face protection. The current SDS states that heating above 150°C in air can form formaldehyde vapors, so applicable ventilation and exposure controls are required.
Assembly, running-in, and low-motion applications
The documented application scope covers metallic contacts where assembly friction, high contact pressure, intermittent movement, running-in behavior, fretting risk, or later dismantling are important. Final suitability depends on the material pair, geometry, surface condition, load, temperature, atmosphere, and applied film quantity.
Evaluate MOLYKOTE® G-N Plus Paste for your metal assembly
Krayden can help review the material pair, surface finish, press-fit or threaded geometry, target friction behavior, contact pressure, movement profile, temperature and atmosphere, corrosion exposure, film quantity, application method, and existing lubricant before a trial on assembly, running-in, gearbox, guide, valve, pump, or metalworking components.
