NEOPRENE (POLYCHLOROPRENE) CR

-40 to 220 F

General purpose elastomer. Moderate oil and ozone resistance, fungus resistant, flame retardant, good compression set, excellent bonding characteristics to metal.

BUNA-N (ACRYLONITRILE/BUTADIENE) NBR

-40 to 220 F

Petroleum-based fluid resistant elastomer. Excellent fuel & oil resistance including lubricating oils and transmission fluids, compression set, gas permeation resistance, low temperature flex. Poor ozone resistance. Also known as nitrile or NBR.

EPDM (ETHYLENE PROPYLENE) EP

-60 to 240 F

Weather resistant elastomer. Excellent low temperature, heat, water, coolant, steam, ozone, and sunlight (UV) resistance. Also resistant mild acids, liquid fertilizer and brake fluids. Virtually no resistances to oil and fuels. Generally considered to be non-staining.

SBR (STYRENE BUTADIENE RUBBER) SBR

-60 to 220 F

First synthetic elastomer. Originally developed to replace natural rubber in tires. Excellent abrasion resistance, but poor fuel and oil resistance. Low cost.

FLUOROELASTOMERS (VITON & FLUOREL) FKM

0 to 450 F

Outstanding fuel, oil and high temperature resistance. Excellent compression set, aging characteristics, and flame retardance. Very poor low temperature characteristics. Very expensive.

BUTYL (ISOBUTYLENE ISOPRENE RUBBER) IIR

-40 to 240 F

Low air permeability. Excellent water, steam and alkali resistance as well as ozone and tear resistance. Very poor fuel & oil resistance.

HYPALON (CHLOROSULFONATED POLYETHYLENE) CSM

-40 to 240 F

Excellent ozone, oxidation and sunlight (UV) resistance. Also resistant to alkalis and acids. Similar oil resistance to chloroprene, but at higher temperatures.

EPICHLOROHYDRIN ECO/CO

-60 to 240 F

Wide temperature range with excellent resistance to fuel & oil. Also exhibits good ozone, weathering and sunlight (UV) resistance. Moderate to high cost prevents more commercial applications.

NATURAL RUBBER (POLYISOPRENE) NR SYNTHETIC RUBBER (POLYISOPRENE) IR

-40 to 180 F

Excellent abrasion and tear resistance with very high tensile strengths. Very poor heat, ozone, sunlight (UV), oil and fuel resistance.

SILICONE

-80 to 450 F

Outstanding temperature range with excellent ozone and compression set characteristics. Very poor tear and tensile strengths (due to weak molecular bond).

OTHER RUBBER PRODUCTS & NAMES

CARBOXYLATED NITRILE (XNBR)
HIGHLY SATURATED NITRILE (HNBR)
FLUOROSILICONE (FVMQ)
POLYACRYLATE (ACM)
VAMAC ETHYLENE ACRYLIC (AEM)
CHLOROPOLYETHYLENE (CM)
URETHANE
THIOKOL POLYSULFIDE

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