Ratings are general guidance for seal compounds of each polymer; swell and attack change with temperature, concentration, exposure time and the individual compound, so test under service conditions before relying on a rating [1].
All Fluids
Rating by polymer (1 satisfactory to 4 unsatisfactory, x no data), Parker compound and handbook page
Fluid
NBR
HNBR
EPDM
FKM
Hifluor
FFKM
FEPM
CR
SBR
ACM
AU/EU
IIR
BR
IR
NR
CSM
FVMQ
VMQ
Compound
Page
“Factory” means the handbook refers the choice of compound to Parker; “None listed” is a blank compound cell, and – a blank rating cell. Fluid names are as printed, including their spelling [1].
Rating Key and Polymers
Compatibility rating
Rating
Meaning
Polymer columns, in the handbook’s order
Abbreviation
Polymer
Approximate Service Temperature Ranges
Polymer type
°C
°F
Both units are printed in the handbook; neither is converted here. The ranges suit most media a material is recommended for, but some media narrow them [1].