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CUT & MOLDED
PRODUCTS
MATERIAL SELECTION / EXTRUDED PARTS
CUT RUBBER MATERIAL OPTIONS (CONTINUED)
COMMON SHEET PACKING POLYMERS
Butyl (IIR / isobutyl-isoprene):
Excellent weathering and dialectic
properties with low air permeability. Good physical properties. Poor
resistance to petroleum-based fluids.
TEMP: -30°F to +212°F
Nitrile (NBR / Buna-N / butadiene-acrylonitrile):
Excellent
resistance to petroleum-based fluids. Good physical properties.
TEMP: -40°F to +200°F
EPDM (ethylene-propylene diene):
Excellent ozone, chemical, heat
and aging resistance. Poor resistance to petroleum-based fluids.
TEMP:
-40°F to +250°F
Silicone (SI / Dimethyl-Polysiloxame):
Excellent high and low
temperature properties, fair physical properties.
TEMP: -80°F to +500°F
Hypalon
®
(CSM / chloro-sulfinated polyethylene):
Excellent
ozone, weathering, and acid resistance. Good abrasion and heat
resistance. Fair resistance to petroleum-based fluids.
TEMP: -20°F to +170°F
SBR (Styrene Butadiene Rubber):
Excellent abrasion resistance
and low temperature properties.
TEMP: -20°F to +180°F
Natural Rubber (NR / Gum Rubber):
Excellent physical properties,
including abrasion and resistance. Good flexibility at low temperature.
Poor resistance to petroleum-based fluids.
TEMP: -20°F to 180°F
Urethane (polyurethane) :
Good aging and excellent abrasion, tear
and solvent resistance. Poor high temperature properties.
TEMP: -58°F to +180°F
Neoprene (CR / polychloroprene):
Good weather resistance and
good inherent flame resistance. Moderate resistance to petroleum-
based fluids. Good physical properties.
TEMP:
-20°F to 190°F
Viton
®
(FKM / Fluorocarbon - Elastomer Type A):
Excellent oil-
and air-resistance at both low and high temperatures. Very good
chemical resistance.
TEMP: -20°F to +450°F