Elastomer Guide

High Temp

225 F

Buna-N (Nitrile)

Characteristics

Very good with oil-based productsGood with acid and caustic (2% caustic max; 0.5% acid max)Loses life at high temperatures

Common Identi�er

Black withred dot

Symbol

UHigh Temp

300 F

EPDM (Ethylene Propylene Diene Monomer)

Characteristics

Very good with acid and causticGood for steamFats and oils will soften and distort material

Common Identi�er

Black with 3 green dots

Symbol

E

High Temp

400 F

Viton® (Steam Resistant Flouroelastomer)

Characteristics

Very good with acid and most oilsGood with caustic and steamHigher costPoor �exibility at low temperatures

Common Identi�er

Black withyellow and white dot

Symbol

SFYHigh Temp

450 F

Te�on® (Polytetra�uoroethylene, PTFE)

Characteristics

Very good for virtually all �uids and temperaturesGood for abrasive applicationsHigher costIn�exible / Can deform under pressure

Common Identi�er

White

Symbol

G

High Temp

450 F

Silicone

Characteristics

Very good for high temperaturesHigher costPoor for high-pressure steamTears easily

Common Identi�er

Translucent with

pink dot

Symbol

X

For more information about elastomers, call

417.831.1411

The information provided is intended to be used only as a guideline.

Due to the many variables in each unique application, testing is the best way to determine elastomer life. Extended exposure near or at high temperature limits may shorten the material life.

Additional materials or colors may be available. Speci�c materialavailability varies by product.