MOLYKOTE D-321
Harmonization Code : 3403.19 | Lubricating Preparations (With 70% or More Petroleum Oils) For Automotive and Other Uses
Main features
- 5-Minute Cure Cycle
- 180 to 450 deg C Service Range
- 12,500 N Falex Load
Product Description
MOLYKOTE® D-321 R Anti-Friction Coating is an air-curing dry-film lubricant available in both bulk liquid and aerosolized spray forms. Formulated with solid lubricants such as molybdenum disulfide and graphite within a solvent and binder system, it provides a gray-black, stick-slip-free coating for metal-to-metal combinations subjected to slow to medium-fast movements and high loads. It cures entirely at room temperature, making it ideal for improving the running-in process and permanently lubricating components like plain bearings, guides, and threaded connections.
Key features
- Extreme temperature and environment stability: Maintains robust lubrication across a massive service temperature range of -180°C to 450°C and performs exceptionally well even under high vacuum conditions.
- High load-carrying capacity: Delivers outstanding extreme-pressure protection, with a Falex load-carrying capacity of up to 12,500 N on phosphated surfaces.
- Convenient air-drying: Becomes touch-dry in just 5 minutes at 23°C and fully cures in 2 hours without the need for high-heat baking.
- Clean formulation: Features high aging resistance and is formulated without intentional polytetrafluoroethylene (PTFE) or per- and polyfluoroalkyl substances (PFAS).
Applications / Suitable for
- Lubrication of plain bearings, bushings, sleeves, and power screw drives
- High voltage switches, slides, guides, and tracks operating at extreme temperatures or in vacuum
- Emergency boundary lubrication, chains, and hard-to-reach surfaces using the aerosol spray
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Chemical Composition | Solid lubricants, solvents, binder | - | Contains molybdenum disulfide and graphite |
| Physical State / Appearance | Gray-black / Black | - | Bulk liquid or aerosolized spray |
| Viscosity (Efflux Time) | 23 | seconds | at 23°C (#3 cup, ISO 2431) |
| Density | 1.05 - 1.07 | g/ml | at 20°C (DIN 53217/2). Value varies between SDS Relative Density and TDS |
| Nonvolatile Content | 29 | % | CTM 0242 1 |
| Usable Life | 24 | months | Stored between 0 and 40°C in unopened containers from date of production |
After-processing / in-service properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Recommended Dry-Film Thickness | 5 to 20 | µm | - |
| Drying Time (Touch-Dry) | 5 | minutes | at 23°C (can be reduced to 1 minute with 80°C hot air) |
| Curing Time (Fully Cured) | 2 | hours | at 23°C |
| Service Temperature Range | -180 to 450 | °C | - |
| Falex Load-Carrying Capacity | 4,500 (b) / 12,500 (p) / 6,800 (s) | N | ASTM D2625 (b=blank, p=phosphated, s=sandblasted) |
| LFW-1 Wear (Rotating) | 212 (b) / 146 (p) / 306 (s) | - | Revolutions x 1,000 to µ=0.1 (F=2,860 N, n=72 rpm, v=7.9 m/min) (ASTM D2714) |
