MOLYKOTE HP-870
Harmonization Code : 3403.19 | Lubricating Preparations (With 70% or More Petroleum Oils) For Automotive and Other Uses
Main features
- Fully Fluorinated Formulation
- -20 to 250 deg C Service Range
- Chemical-Resistant PFPE/PTFE Grease
Product Description
MOLYKOTE® HP-870 Grease is a white, fully fluorinated lubricating grease based on linear perfluoropolyether oil with a PTFE thickener and PTFE solid lubricants. The NLGI Grade 2 formulation combines high-temperature stability, chemical and solvent resistance, corrosion protection, and low base-oil vapor pressure. It is designed for demanding environments including high vacuum, corrosive service, liquefied-natural-gas equipment, cleanrooms, and semiconductor manufacturing equipment where lubricant evaporation can be problematic. Its 350 cSt base-oil viscosity and service-temperature range from −20°C to 250°C support long-term lubrication of bearings, valves, seals, electrical components, plastics, rubbers, and elastomers.
Key features
- Fully fluorinated formulation: Uses linear PFPE base oil with a PTFE thickener and PTFE solid lubricants.
- High-temperature capability: Supports service temperatures from −20°C to 250°C.
- Chemical resistance: Provides resistance to chemicals, solvents, corrosion, and oxidation.
- Low base-oil vapor pressure: Suitable for high-vacuum and low-volatilization applications.
- High load-carrying performance: Provides a four-ball weld load greater than 4,900 N under the documented test conditions.
- Material compatibility: Compatible with most rubber and plastics.
Applications / Suitable for
- Cleanroom and semiconductor manufacturing equipment
- High-vacuum and low-volatilization lubrication
- Corrosive, chemical, and solvent-exposed equipment
- Liquefied-natural-gas service
- Rolling-element bearings and hot-air-dryer motor axles
- Valves, packings, seals, O-rings, plastics, rubbers, and elastomers
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Typical as-supplied characteristics and storage information for MOLYKOTE® HP-870 Grease. Values are not intended as specification limits.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Technology | Perfluoropolyether | — | Linear PFPE-based grease |
| Thickener | PTFE | — | Fluorinated-polymer thickener |
| Solid lubricant | PTFE | — | Supplier-listed composition |
| Appearance | White | — | Typical property |
| NLGI grade | 2 | — | Consistency classification |
| Worked penetration, 60 strokes | 280 | 0.1 mm | JIS K 2220 |
| Base-oil viscosity | 350 | cSt | At 40°C |
| Density | 2.0 | g/cm³ | Typical property |
| Usable life | 36 | months | Unopened and stored in a cool, dark place |
After-application / in-service properties
Typical performance characteristics relevant to the applied lubricant. Results apply only to the stated test methods and conditions.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Service-temperature range | −20 to 250 | °C | Supplier-listed service range |
| Bleed | 5.0 | % | MIL-S-8660; 200°C for 24 hours |
| Evaporation | 1.0 | % | MIL-S-8660; 200°C for 24 hours |
| Extended evaporation | 3.0 | % | MIL-S-8660; 200°C for 1,000 hours |
| Four-ball weld load | >4,900 | N | ASTM D2596; 1,500 rpm for 1 minute |
| Four-ball wear scar | 1.3 | mm | ASTM D2266; 1,200 rpm, 392 N, 1 hour |
| Low-temperature torque | 54 starting / 28 running | N·cm | JIS K 2220 at −20°C |
| Emcor corrosion test | 0–1 | — | DIN 51802 |
| Base-oil vapor pressure | 2 × 10−6 | Pa | At 20°C |
