Apiezon PFPE 501 vacuum grease (EMS)

PFPE 501 is a chemically inert, high temperature and extreme pressure lubricant. With an upper operating temperature of 250?C and vapour pressure of 1.3 x 10-12 at 25?C, it is robust, versatile and can be used for sealing and lubricating under the most extreme operating conditions. This includes environments where aggressive chemicals and strong oxidising agents are regularly used.

Note: Apiezon PFPE 501 is a replacement for Braycote 803.

Features:

• PFPE based
• High temperature lubricant
• Used in oxygen rich environments
• Ultra high vacuum
• Chemically inert
• Extreme pressure
• Wide temperature range

Comparison Data for Apiezon Greases

Benefits:

• NLGI No.: 2 
• Penetration P60: 280 
• Typical working temperature range: -15 to 250?C
• Vapour pressure @ 25?C: 1.3 x 10^-12Torr
• Relative density @ 25?C: 2.003
• 4 ball weld point (load) ASTM D2596: 800kg
• 4 ball wear scar ASTM D2266 (40kg): 0.94mm
• Outgassing characteristics - ASTM.E 595: <1% TML, <0.1% CVCM
• Evaporation 24hrs @ 100?C: 0.02% 
• Oil separation 24hrs @ 100?C: 2.10% 
• Low temperature torque @ 25?C: starting 162.3g/cm, running 64.4g/cm  

Apiezon PFPE 501 Technical Data

NOTE: Formerly called M019