MOLYKOTE D-321R AN-FR
Harmonization Code : 2710199990 |
Main features
- Room-Temperature Application Cure
- Dry Film Lubricant Formulation
- 180 to 450 deg C Service Range
Product Description
MOLYKOTE® D-321 R Anti-Friction Coating is an air-curing dry-film lubricant supplied as a bulk liquid or aerosolized spray. Its solid-lubricant and binder system forms a gray-black lubricating film for high-load metal-to-metal interfaces operating with slow to medium-speed movement. The coating supports running-in and boundary-lubrication requirements while helping avoid stick-slip. A recommended dry-film thickness of 5 to 20 µm and a documented service temperature range of -180 to 450°C support evaluation across demanding mechanical assemblies and extreme-temperature environments.
Key features
- Air-curing dry-film lubrication: Becomes touch-dry after 5 minutes at 23°C and is fully cured and ready for use after 2 hours at 23°C.
- High-load metal interface performance: Formulated for metal-to-metal combinations with slow to medium-speed movement and high loads.
- Broad service temperature range: The applied coating has a documented service temperature range of -180 to 450°C.
Applications / Suitable for
- Plain bearings, bushings and sleeves
- Power screw drives
- Threaded connections and fasteners
- Slides, guides and tracks
- High-voltage switches, including operation under high vacuum and extreme temperatures
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Typical values for the bulk liquid coating. These values are not intended for use as specification limits.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Gray-black | — | Typical |
| Viscosity | 23 | seconds | ISO 2431; 23°C; #3 cup |
| Density | 1.07 | g/ml | DIN 53217/2; 20°C |
| Nonvolatile content | 29 | % | CTM 0242 I |
After-processing / final-state properties
Typical dry-film performance values. Surface pretreatment codes are blank (b), phosphated (p) and sandblasted (s). These values are not specification limits.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Service temperature range | -180 to 450 | °C | Typical applied dry-film range |
| Falex load-carrying capacity | b = 4,500; p = 12,500; s = 6,800 | N | ASTM D2625; results depend on surface pretreatment |
| LFW-I rotating service life to μ = 0.1 | b = 212; p = 146; s = 306 | revolutions × 1,000 | ASTM D2714; F = 2,860 N; n = 72 rpm; V = 7.9 m/minute |
