Buffalo Matting & Rubber Co

Sheet Rubber Products

Rubber elastomers are mixed with various chemicals in order to provide the reinforcement and curing ingredients necessary to produce the physical properties required for the service conditions.

A wide choice of basic polymers (rubbers) is available, and many of these rubbers are compounded to obtain different properties. The comments below are limited to the basic elastomers.



ASTM Designation

Common Name Composition General Properties Cloth Inserted Diaphragm Unsupported ASHTO ASTM D-2000 Mil Spec Electrical Conductive
NR Natural Isoprene, Natural Excellent physical properties including abrasion and temperature resistance. 
Poor resistance to petroleum-based fluids, ozone, sunlight
X X X   X X
IR Polyisoprene Isoprene, Synthetic Similar to natural rubber. More uniformity in light colors, i.e. Tan. Slightly less abrasion resistance X X X      
SBR SBR Styrene-Butadiene Good physical properties and abrasion resistance. Poor resistance to petroleum based fluids. X X X      
CR Neoprene Chloroprene Good weathering resistance. Flame retarding. Moderate resistance to petroleum-based fluids. Good multi-use physical properties. X X X X X X
NBR Buna N Nitrile-Butadiene Excellent resistance to petroleum-based fluids. Good physical properties, i.e., moderate abrasion resistance, good temperature range, ozone resistance. X X X   X  
IIR Butyl Isobutene-Isoprene Very good weathering resistance. Excellent dielectric properties. Low permeability to air. Good physical properties. Poor resistance to petroleum-based fluids. X X X   X  
EPDM Ethylene-Propylene Rubber Ethylene-Propylene-Diene Methylene Excellent Ozone, chemical and propylene-diene-methylene aging resistance. Poor resistance to rubbers petroleum-based fluids. Excellent heat resistance. X X X   X  
EPT Ethylene-Propylene Ethylene Propylene Terpolymers Excellent Ozone, chemical and propylene-diene-methylene aging resistance. Poor resistance to rubbers petroleum-based fluids. Excellent heat resistance. X X X   X