Atmospheric Corrosion
135
TabLE 4.13
Resistance of Elastomers to Atmospheric Pollution
Elastomer
UV
Degradation
Resistance
to Water
Absorption
Pollutant
Weathering Ozone SO 2 NO x H 2 S
NR, natural rubber
Ρ
Ε
Ρ
Ρ
Χ
R b
IR, isoprene rubber
Ρ
Ε
Ρ
Ρ
X
R b
CR, neoprene rubber
Ε
G
Ε
GE
X
Χ
R
SBR, Buna S
Ρ
GE
Ρ
Ρ
NBR, Buna Ν
Ρ
FG
F
Ρ
R a
Χ
R b
IIR, butyl rubber
G
G
Ε
Ε
R
R
CIIR, chlorolbutyl
G
G
F
Ε
CSM, Hypalon
Ε
GE
Ε
Ε
Χ
Χ
R
BR, polybutadiene
Ρ
G
G
Ρ
R b
EA, ethylene-acrylic
Ε
G
G
Ε
ABR, acrylatebutadiene
Ε
G
Ε
Ε
Acrylic, ester-acrylic
halide
G
G
F
Ε
EPDM, ethylenepropylene
Ε
GE
Ε
Ε
R
R
R b
SBS, styrene-butadienestyrene
Ρ
Ε
F
Ρ
SEBS, styrene-ethylenebutylene-styrene
G
Ε
G
Ε
ST, polysulfide
Ε
G
Ε
Ε
FA, polysulfide
Ε
Ε
Ε
AU, urethane
Ρ
G
G
Ε
PA, polyamides
Ρ
G
Ε
Ε
R
Χ
PE, polyester
G
G
G
Ε
R
TPE, thermoplastic
elastomer
G
Ε
Ε
Ε
SI, silicone rubber
Ε
G
Ε
Ε
FSI, fluorosilicone
rubber
Ε
G
Ε
Ε
-
HFP, hexafluoroprene
Ε
G
Ε
Ε
FKM, fluoroelastomers
GE
GE
Ε
Ε
Χ
Χ
R a
ETFE, ethylenetetrafluorethylene
Ε
G
Ε
Ε
R
R
R
ECTFE, ethylenechlorotrifluorethylene
Ε
Ε
Ε
Ε
R
R
R
FPM,
perfluoroelastomers
Ε
G
Ε
Ε
R
R
R
Note: Ε = excellent; G = good; F = fair; P = poor; R = resistant; X = not resistant.
a Wet only
b Dry only.
Source: From Reference 14.