General Chemical Resistance of Various Elastomers

The following chart offers a general indication of suitability of various elastomers for service in the proximity of the chemicals listed.

We do not warrant the accuracy nor take responsibility for use thereof.   Several variables must always be taken into consideration when using a rubber part in service.   Some variables that can effect performance are:

  1. Temperature: Elevated temperatures increase the effect of all chemicals on polymers.   A compound quite suitable at room temperature might fail miserably at elevated temperature.

  2. Condition of Service: A compound that swells badly might still function as a static seal yet fail in any dynamic application

  3. Flow: The flow and exposure to the polymer, whether it is continuous or intermittent.   A polymer may hold up to intermittent exposure, but may fail with continuous flow.

  4. The Grade of the Polymer: Many types of polymers are available in different grades that vary greatly in chemical resistance.

  5. The Compound Itself: Compounds that are designed for specific properties may lack in performance compared to one designed especially for fluid resistance.

In light of the above variables, it is always best to test for each application.

Please note that our gaskets are manufactured with Fluoroelastomer - FKM.  Viton is trademarked brand name of FKM.   All product and paperwork will reference FKM and / or Fluoroelastomer only.   These gaskets are special order and accordingly upon acceptance of the order it cannot be cancelled or returned.   FKM gaskets shipping UPS may be insured for the actual value of the shipment and included in the freight charge.

Common Names

General Properties

Resistant To:

Attacked By:

SBR

Buna - S, Styrene Butadiene

Good physical properties and abrasion resistant to petroleum based fluids

Most moderate chemicals, wet or dry, organic acids, alcohols, ketones, aldehydes

Ozone,strong acids, fats, oils, greases, most hydrocarbons

Nitrile (75 +- 5)

Buna - N, NBR

Excellent resistance to petroleums based fluids & Good physical properties

Many hydrocarbons, fats, oils, greases, hydraulic fluids, chemicals

Ozone (except PVC blends), ketones, esters, aldehydes, chlorinated and nitro hydrocarbons

Neoprene (75 +-5)

CR, Chloroprene

Good weathering resistance, flame retarding & Moderate resistance petroleum based fluids

Moderate chemicals and acids, ozone, oils, fats, greases, many oils and solvents

Strong oxidizing acids, esters, ketones, esters, chlorinated, aromatic, and nitro hydrocarbons

EPDM (75 +-5)

EPM, Ethylene Propylene

Excellent ozone, chemical and aging resistance & Poor resistance to petroleum based fluids

Animal and vegetable oils ozone, strong and oxidizing chemicals

Mineral oils and solvents, aromatic hydrocarbons

Fluoroelastomer (75 +-5)

FKM, Viton

Excellent oil and" air resistance both at low and high temperatures & Very good chemical resistance

All aliphatic aromatic and halogenated hydrocarbons, acids, animal and vegetable oils

Ketones, low molecular weight esters and nitro-containing compounds

Intermittent use is generally defined as 1-2 hours at a time

Raw Rubber
NBR Label
EPDM Label
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