MOLYKOTE HP-300

Harmonization Code : 3403.19 | Lubricating Preparations (With 70% or More Petroleum Oils) For Automotive and Other Uses

MOLYKOTE HP-300

Main features

  • Fully Fluorinated PFPE/PTFE Lubrication
  • 65 to 250 deg C Service Range
  • 3,300 N Four-Ball Weld Load

Product Description

MOLYKOTE® HP-300 Grease is a white, fully fluorinated lubricating grease based on perfluoropolyether oil with a PTFE thickener and PTFE solid lubricants. The NLGI Grade 2 formulation provides lubrication across a service-temperature range of −65°C to 250°C and resists chemicals, solvents, oxidation, and high-temperature exposure. It is suitable for harsh environments including corrosive service, liquefied natural gas, high vacuum, cleanroom equipment, and semiconductor manufacturing equipment where low lubricant volatilization is important. :contentReference[oaicite:0]{index=0}

Key features

  • Fully fluorinated formulation: Uses PFPE base oil with a PTFE thickener and PTFE solid lubricants.
  • Wide service-temperature range: Supports lubrication from −65°C to 250°C.
  • Chemical and solvent resistance: Formulated for harsh and chemically aggressive operating environments.
  • Low-volatility base oil: Provides a base-oil vapor pressure of 4 × 10−10 Pa at 20°C.
  • High-temperature stability: Shows 0.2% evaporation after 24 hours at 200°C under MIL-S-8660 testing.
  • Plastic compatibility: Compatible with most plastics.

Applications / Suitable for

  • Cleanroom and semiconductor manufacturing equipment
  • High-vacuum and low-volatilization applications
  • Corrosive and solvent-exposed equipment
  • Liquefied-natural-gas service
  • Rolling-element bearings, valves, packings, seals, and O-rings
  • Plastic, rubber, and elastomer lubrication
Product Family

MOLYKOTE HP-300

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Product Type
Material category or functional product class.
Chemically resistant grease; NLGI 2
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
Approx. 1.9 g/mL at 20°C
Thermal Properties
Operating Temperature
−65°C to 300°C °C

Additional Information

Technical properties

As-supplied / before-processing properties

Typical as-supplied characteristics and storage information for MOLYKOTE® HP-300 Grease. Values are not intended as specification limits. :contentReference[oaicite:1]{index=1}

Property Value Unit Method / condition
Technology Perfluoropolyether — 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 160 cSt At 40°C
Density 2.0 g/cm³ Typical property
Usable life 36 months Unopened and stored in a cool, dark place
Technical properties

After-application / in-service properties

Typical performance characteristics relevant to the applied lubricant. Results apply only to the stated test methods and conditions. :contentReference[oaicite:2]{index=2}

Property Value Unit Method / condition
Service-temperature range −65 to 250 °C Supplier-listed service range
Bleed 8.0 % MIL-S-8660; 200°C for 24 hours
Evaporation 0.2 % MIL-S-8660; 200°C for 24 hours
Extended evaporation 1.0 % MIL-S-8660; 200°C for 1,000 hours
Four-ball weld load 3,300 N ASTM D2596; 1,500 rpm for 1 minute
Four-ball wear scar 1.1 mm ASTM D2266; 1,200 rpm, 392 N, 1 hour
Low-temperature torque 11 starting / 3.6 running N·cm JIS K 2220 at −40°C
Base-oil vapor pressure 4 × 10−10 Pa At 20°C

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