Most commonly known as AFLAS® or Viton® Extreme™; Tetrafluoroethylene Propylene (FEPM or TFE/P) is a fluorinated rubber. It has excellent resistance to a wide variety of chemicals, both acids and bases. It works well at elevated temperatures and has very good resistance to petroleum fluids. AFLAS® has excellent steam and hot water resistance.

 

The raw material cost for FEPM is relatively high and it is difficult to process. Like most other fluoropolymers, FEPM does not have especially good low temperature properties

 

The temperature range for FEPM compounds is 0° to 475° F (-15 to 245°C). PAI offers FEPM compounds in a hardness range of 70 to 90 durometer. Black is the standard color, but some others are available.

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Item #

Nominal Durometer

Color

Compound Features

RoHS Compliant

REACH Compliant

608604 N/A 65 N/A Black N/A Viton® Extreme N/A Yes N/A Yes
25722 N/A 70 N/A Green N/A Aflas® N/A Yes N/A Yes
25701 N/A 75 N/A Black N/A General Purpose AFLAS® N/A Yes N/A Yes
25796 N/A 75 N/A Black N/A General Purpose Aflas®, AMS 7255 N/A Yes N/A Yes
608804 N/A 75 N/A Black N/A Viton® Extreme N/A Yes N/A Yes
608806 N/A 75 N/A Black N/A FDA, Viton® Extreme™ N/A Yes N/A Yes
25801 N/A 80 N/A Black N/A General Purpose AFLAS® N/A Yes N/A Yes
25822 N/A 80 N/A Green N/A Aflas® N/A Yes N/A
25896 N/A 80 N/A Black N/A General Purpose AFLAS® N/A Yes N/A Yes
25897 N/A 80 N/A Black N/A Elastomeric Submersible Pump Bag N/A Yes N/A Yes
25895 N/A 85 N/A Black N/A RGD Resistant N/A Yes N/A Yes
25901 N/A 90 N/A Black N/A General Purpose AFLAS® N/A Yes N/A Yes
25996 N/A 90 N/A Black N/A General Purpose AFLAS® N/A Yes N/A Yes
25998 N/A 90 N/A Black N/A AFLAS®, Back-Up Rings N/A Yes N/A Yes
608906 N/A 90 N/A Black N/A Viton® Extreme™ N/A Yes N/A Yes
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