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MOLYKOTE 33 Light 1 kg, extreme low-temperature bearing grease, NLGI 1, silicone, white, −73 °C to +204 °C
Description
MOLYKOTE 33 Light Extreme Low Temperature Grease 1 kg is a white, silicone-based grease for bearings and precision mechanisms operating at very low temperatures. The “Light” grade (NLGI 1) delivers very low start-up torque, stable lubrication under light to moderate loads, and broad compatibility with many plastics and rubber.
Benefits and unique features
- Wide service range: −73 °C to +204 °C – reliable cold starts
- Very low start-up torque – ideal for delicate mechanisms and cold starts
- Compatible with many plastics and rubber – typically does not soften materials
- Good resistance to oxidation and moisture – extended service intervals
- Lithium-soap thickener + silicone base oil – shear stability and easy application
Properties and applications
- Precision bearings and drives: electric clocks, optical devices, measuring instruments, small motors.
- Low-temperature equipment: freezer carts, cold-room conveyors, mechanisms requiring easy start-up.
- Automotive/electronics: windshield-wiper gearboxes, starter clutch drives, small gear trains.
- Application note: not recommended for highly loaded ferrous sliding combinations.
Technical parameters
| Parameter | Value |
|---|---|
| Net content | 1 kg (can) |
| Color | white / off-white |
| State / appearance | silicone grease |
| Odor | slight |
| Relative density (20 °C) | approx. 1.1 |
| Water solubility | insoluble |
| Thickener / base oil | lithium soap / silicone oil |
| Base-oil viscosity (25 °C) | approx. 100 mm²/s |
| NLGI grade | 1 (Light) |
| Worked penetration (ASTM D217, 60 strokes) | approx. 320 (1/10 mm) |
| Service temperature | −73 °C to +204 °C |
| Drop point (ASTM D2265) | approx. 226 °C |
| 4-ball weld load | approx. 1200 N (≈122 kg) |
| Low-temp torque at −73 °C | ~0.130 N·m; after 20 min ~0.013 N·m |
| Flash point (closed cup) | > 101.1 °C |
| Transport classification | not subject to ADR / IMDG / IATA |
| CLP classification / signal word | not classified / — |
Storage recommendations
Store in the original, tightly closed container, in a dry, well-ventilated place, away from oxidizers. Recommended storage temperature: 0–40 °C. Avoid excessive heating and contamination during application.
FAQ
1) What is the service temperature?
Approximately −73 °C to +204 °C – engineered for extreme low temperatures.
2) Is it suitable for plastics and rubber?
Yes, it typically does not soften most plastics; used on plastic gears, bearings and cams.
3) Is it hazardous or ADR-regulated?
No – it is not classified as hazardous and is not subject to ADR/IMDG/IATA.
4) Any limitations?
Not recommended for very highly loaded ferrous sliding combinations.
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