O-Ring Info

Parker Seals
Temperature Ranges of Parker Standard O-Ring Compounds

POLYMER KEY BASIC PARKER
O-RING
COMPOUNDS		 TEMPERATURE RANGE
CODE POLYMER °F °C
A Polyacrylate A1107-70 -5 to +350 -20to +177
B Butyl B612-70 -75 to +250 -59to +120
C Neoprene (Chloroprene) C873-70 -45 to +250/300 -43 to +120/150
E Ethylene Propylene E540-80 -70 to +275/400 -57 to +135/205
G SBR G244-70 -70 to +225 -57 to +107
L Fluorosilicone L1120-70 -100 to +350/400 -73 to +177/205
N Nitrile (BUNA N) N674-70
N103-70		 -30 to +250
-65 to +225		 -34 to +121
-55 to +107
P Polyurethane P642-70 -40 to + 180 -40 to +82
S Silicone S604-70 -65 to +450 54 to +232
V Fluorocarbon V747-70 -15 to +400/500 -26 to +205/260

 

Comparison of Properties of Commonly Used Elastomers

PARKER COMPOUND NUMBER PREFIX N C E B V A S L
P-POOR
F-FAIR
Q-GOOD
E-EXCELLENT		 NITRILE OR BUNA N NEOPRENE ETHYLENE PROPYLENE BUTYL FLUOROCARBON POLYACRYLATE SILICONE FLUOROSILICONE
Ozone resistance P GE E GE E E E E
Weather resistance F E E GE E E E E
Heat resistance G G E GE E E E E
Chemical resistance FG FG E E E P GE E
Oil resistance E FG P P E E PG G
Impermeability G G G E G E P P
Cold resistance G FG GE G FP P E GE
Tear resistance FG FG GE G F FG P P
Abrasion resistance G G GE FG G G P P
Set resistance GE F GE FG GE F GE GE
Dynamic properties GE F GE F GE F P P
Acid resistance F FG G G E P FG FG
Tensile strength GE G GE G GE F P F
Electrical properties F F G G F F E E
Water/steam resistance FG F E G FG P F F
Flame resistance P G P P E P F G

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