Appendix D: Fluid Compatibility Tables
fct-4 09/30/2010 LV1 User Manual D-2
Polyetheretherketone, one of the new high-strength engineering plastics. Has excellent chemical
resistance and structural properties. Very high temperature capability. Used for bearings, gaskets,
and back-up rings.
PEEK:
Has broadest chemical resistance of all plastic materials and outstanding temperature capability.
Limited strength and poor shape retention make PTFE a poor choice for sealing and load bearing
applications unless combined with other fillers such as glass fibers, carbon graphite, or
molybdenum disulfide.
PTFE: (Trade name, Teflon):
R = Recommended
M = Marginal
U = Unsatisfactory
X = Insufficient Data
L = Likely to be Compatible
Fluid Nitrile EPDM Neoprene Fluoroelastomer UHMWPE PEEK PTFE
Acetaldehyde U R U U X L R
Acetamide R R R U X X R
Acetic Acid M R R U R R R
Acetone U R M U R R R
Acetophenone U R U U X L R
Acetylene R R R R L R R
Acrylonitrile U U U U X R R
Ammonia R R R U R R R
Ammonium Hydroxide R R R R L R R
Amyl Acetate U M U U R L R
Anderol L-774 M U U R L L X
Antifreeze R R R R R R R
Aniline U R U M R R R
Ansul Ether M M U U X L L
Aroclors M R U R X L L
Askarel R U U R X L R
Asphalt M U M R L R R
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