7
ELASTOMER MATERIAL - SUMMARY
No.
International
abbreviation
DMM
Chemical Name
Trade Name
Speci c Properties
Guide line
fortemperature
range
1 NR
3.5
Natural
rubber
High mechanical strength
and elasticity
-40 TO +80 C
2 SBR
4-
styrene-butadiene
rubber
Buna
Good resistance to W~ in alkalis
and WM
-40 TO +80 C
3
IR
5-
lsoprene rubber
Natsyn
Very good mechanical strength
and elasticity
-50 TO +80 C
4 EPDM
5-
Ethylene propylenedi-
ene terpolymer
Kaftan Buna
Very good ozone resistance e.g.
used for washing and dish washer
machine gaskets
-40 TO +140 C
5
PNR
8
Polynorborene rubber
Norsorex
Can be made very soft
-40 TO +80 C
6 NBR
("Nitrile")
7-
Acrylonitrile butadiene
rubber
Parbunan
Good swelling resistance especially
in allphatic hydrocarbons oil and
grease
-30 TO +120 C
7 11R
7-
Isobutene lsoprene
rubber
Polysarbutyl
Little gas permeability.
High damping behaviour
-30 TO +140 C
8 CR
8.5
Chloroprene
rubber
Baypren
Neoprene
Non ammable, good weathering
resistance
-30 TO +120 C
9 CSM
8.5
Chloro sulphenyl
polythene
Hypalon
Swelling resistance in combination
with good ozone and weathering
resistance
-30 TO +130 C
10
ECO 14-
Epichlohydrin
copolymer
Hydrin Herclor
Good oil and heat: resistance,
good damping behaviour
-30 TO +130 C
11 ACM
16-
Ethyl acrylate
copolymer
Hycar
Excellent: resistance in oil at higher
temperatures
-25 TO +140 C
12
SI
18-
Silicone rubber
Silopren Silastic
Thermal resistance (dry heat),
good dielectric properties
-60 TO +200 C
13
LSR
23-
Liquid Silicone rubber
Silopren Silastic
Thermal resistance (dry heat),
good dielectric properties
-60 TO +200 C
14 HNBR
60-
Hydrogenerated
acrylonitrile butadiene
rubber
Therban
Very good resistance against oils
containing additives, very good
hot air resistance, good low
temperature behaviour
-30 TO +150 C
15
PPM normal
(Fluor Polymer)
120-
Vinylidene uoride-
hexa uoropropylene
copolymer
Viton Fluorel
Tecno on
High temperature resistance &
very good chemical stability
-25 TO +230 C
16
FPM M 15
(Fluor Polymer)
190-
Vinylidene uoride-
hexa uoropropylene
copolymer
Viton Fluorel
Techno on
High temperature resistance & very
good chemical stability additionally
little swelling in M-15 fuel and
lead- free fuel
-25 TO +230 C
17 FVMQ 250- Fluor
Silicone
Silastic
Very good swelling resistance in oil
and fuels with good cold exibility
-60 TO +200 C