General Properties of Elastomeric Materials
Common
Name(s)
Designat Composition
ion (2)
Min/Ma General
x
Properties(
Temp
1)
Operati
ng
Range
(F) (5)
General Chemical
Resistance (3)
Resistant
to:
Attacked
by:
Neoprene
CR
Chloroprene
-30 F /
212 F
Good
Weatherin
g
Resistance
. Flame
retarding.
Moderate
resistance
to
petroleumbased
fluids.
Moderate
chemicals
and acids,
ozone,
oils, fats,
greases,
many oils,
and
solvents.
Strong
oxidizing
acids,
esters,
ketones,
chlorinate
d,
aromatic
and nitro
hydrocarb
ons.
EPDM
EPDM,
EPM
Ethylenepropylenediene;
Ethylenepropylene
-40 F /
300 F
Excellent
ozone,
chemical,
and aging
resistance.
Poor
resistance
to
petroleumbased
fluids.
Animal
and
vegetable
oils,
ozone,
strong and
oxidizing
chemicals.
Mineral
oils and
solvents,
aromatic
hydrocarb
ons.
Buna-N
NBR
Nitrilebutadiene
-30 F /
250 F
Excellent
resistance
to
petroleumbased
fluids.
Good
physical
properties.
Many
hydrocarb
ons, fats,
oils,
greases,
hydraulic
fluids,
chemicals.
Ozone
(except
PVC
blends),
ketones,
esters,
aldehydes
,
chlorinate
d and nitro
hydrocarb
ons.
General Properties of Elastomeric Materials
Silicone
Q, Si
Polysiloxane
-80 F /
420 F
Excellent
high and
low
temperatur
e
properties.
Fair
physical
properties.
Moderate
or
oxidizing
chemicals,
ozone,
concentrat
ed sodium
hydroxide.
Many
solvents,
oils,
concentrat
ed acids,
dilute
sodium
hydroxide.
SBR
SBR
Styrenebutadiene
-20 F /
212F
Good
physical
properties
and
abrasion
resistance.
Poor
resistance
to
petroleumbased
fluids.
Most
moderate
chemicals,
wet or dry,
organic
acids,
alcohols,
ketones,
aldehydes
.
Ozone,
strong
acids, fats,
oils,
greases,
most
hydrocarb
ons.
Butyl
IIR
Isobuteneisoprene
-60 F /
250 F
Very good
weathering
resistance.
Excellent
dielectric
properties.
Low
permeabilit
y to air.
Good
physical
properties.
Poor
resistance
to
petroleumbased
fluids.
Animal
and
vegetable
fats, oils,
greases,
ozone,
strong and
oxidizing
chemicals.
Petroleum
, solvents,
coal tar
solvents,
aromatic
hydrocarb
ons.
Natural,
Gum
Rubber
NR
Isoprene,
natural
-60 F /
220 F
Excellent
physical
properties
including
Most
moderate
chemicals,
wet or dry,
Ozone,
strong
acids, fats,
oils,
General Properties of Elastomeric Materials
abrasion
and low
temperatur
e
resistance.
Poor
resistance
to
petroleumbased
fluids.
organic
acids,
alcohols,
ketones,
aldehydes
.
greases,
most
hydrocarb
ons.
Hypalon
(4)
CSM
Chloro-sulfonylpolyethylene
-40 F /
320 F
Excellent
ozone,
weathering
, and acid
resistance.
Good and
abrasion
and heat
resistance.
Fair
resistance
to
petroleumbased
fluids.
Similar to
Neoprene
with
improved
acid
resistance
.
Concentra
ted
oxidizing
acids,
esters,
ketones,
chlorinate
d,
aromatic,
and nitro
hydrocarb
ons.
Urethane
AU, EU
Polyethyleneapdate, Poly
(oxy-1, 4,
butylene) ether
-40 F /
175 F
Good
aging and
excellent
abrasion,
tear, and
solvent
resistance.
Poor high
temperatur
e
properties.
Ozone,
hydrocarb
ons,
moderate
chemicals,
fats, oils,
greases.
Concentra
ted acids,
ketones,
esters,
chlorinate
d and nitro
hydrocarb
ons.
Viton ®
(4),
Fluoroelastomer
FPM
Hexaflouroprop
ylenevinylidene
fluoride
- 10 F / Excellent
400 F
oil and air
resistance
both at low
and high
temperatur
All
aliphatic,
aromatic
and
halogenat
ed
Ketones,
low
molecular
weight
esters and
nitro
General Properties of Elastomeric Materials
es. Very
good
chemical
resistance.
hydrocarb containing
ons, acids, compound
animal
s.
and
vegetable
oils.
Fluorosilicone
FSi
Fluorocarbon
-60 F /
350 F
Offers
superior
heat
resistance.
resistant to
cold, oils
and
solvents of
fluorinated
rubber.
Good for
special
application
s where
general
resistance
to
oxidizing
chemicals,
aromatic
and
chlorinated
solvent
bases are
required.
Narrower
Temp
range than
silicone
but better
fluid
resistance
Moderate
or
oxidizing
chemicals,
ozone,
aromatic
chlorinate
d solvents,
bases.
Brake
fluids,
hydrazine,
ketones.
Hydrogen
ated
Nitrile
HNBR
Hydrogenated
Acrylonitrilebutadiene
rubber
-22 F /
300 F
Excellent
heat and
oil
resistance,
improved
fuel and
Many
hydrocarb
ons,
transmissi
on fluids,
refrigerant
Chlorated
hydrocarb
ons,
keytones,
strong
acids.
General Properties of Elastomeric Materials
Carboxyla
ted Nitrile
XNBR
Carboxylated
Nitrile
-20 F /
250 F
ozone
resistance
(approxim
ately 5X)
over Nitrile
Good
abrasion
resistance.
Decreased
elasticity at
low
temperatur
es with
hydrogena
tion over
standard
nitrile.
s, diluted
acids,
hydraulic
fluids,
silicone
oils,
vegetable
and
animal
fats and
oils, water
and
steam.
Excellent
Abrasion
and Tear
Resistance
, Fair
Ozone and
Steam
Resistance
. Poor to
Fair
Sunlight
and
Outdoors.
Good to
Excellent
Oil
Resistance
.
Many
hydrocarb
ons, fats,
oils,
greases,
hydraulic
fluids,
chemicals.
Ozone
(except
PVC
blends),
ketones,
esters,
aldehydes
,
chlorinate
d and nitro
hydrocarb
ons.
1. From the "Sheet Rubber Handbook - Gasket and Packing Materials" publication #IP40 of the Rubber Manufacturers Association (RMA).
2. ASTM D 1418-79
3. 1979 Yearbook of the Los Angeles Rubber Group, Inc.
4. "Viton" and "Kalrez" are registered trademarks of E.I. Dupont, Inc.