403 – Fluorocarbon Viton Sponge (FKM)

Temperature Range (depending on grade)                

Constant Low:     -25°C          Intermittent Low:           -25°C

Constant High:    204°C         Intermittent High:           204°C



Viton® sponge sheeting is closed cell and manufactured with a skin on both sides to provide increased tear resistance. Like solid Viton it has a high temperature resistance and good resistance to aliphatic and aromatic hydrocarbons, oils, fuels and lubricants. Viton® sponge sheeting also has good resistance to acids, weathering and ozone.


Typical Physical Properties
Water Pick-Up (% Weight Increase)00.00020.00060.0001
Compression Set (%)
(22 hours at 75° F)1111
(22 hours at 158° F)
Low Temperature Brittleness (° F)-10°F-10°F-10°F-10°F
Compression Deflection (psi)
(25% Deflection—original)6.55.543.5
(25% Deflection—7 days at 400° F)97.565
Density—Lbs per cubic foot19171510
Thickness Tolerance0.

Full data sheets for all grades are available on request.

* The information above is supplied in good faith and believed to be correct. This information is supplied upon the condition that persons receiving this will make their own determination as to its suitability for their purposes prior to use. EMI makes no representations or warranties, either expressed or implied with respect to the information or the product to which this information refers.