viton sponge pads
At NEDC we cut many different types of gasketing materials. Some of our most popular selections are fuel resistant materials. Materials such as fluorosilicone, epichlorohydrin, nitrile, and Viton® we hear about a lot. When an easily compressible option is required with fuel resistance, Viton® Sponge usually is selected.
Properties of Viton® (Fluoroelastomer) Sponge
Everyone has read about Viton® material that is used in the fuel/gas industry. We offer die-cut parts out of a specific Viton® Sponge. This medium Density Viton® A Sponge is manufactured by a company called Mosites Rubber located in Fort Worth, Texas. Mosites #1028 is good for thermal insulation, is resilient, and light-weight. It’s used primarily where significant pressure is not available for other conventional sealing solutions. Its temperature range is -10°F to 400°F. Similar to other fluoroelastomer materials, low temperature is not this material’s strength. This closed cell sponge exhibits low amounts of water intrusion due to its closed cell nature. Similar to Viton Solid Rubber, it is generally resistant to aliphatic, and aromatic hydrocarbons, oil, fuels, ozone, and weathering. The sponge rubber material is made from Genuine Viton® from DuPont Chemours Company. It comes with a smooth finish from the skin on both sides.
Why Viton Sponge instead of Fluorosilicone Sponge?
You may be asking yourself, why not just use fluorosilicone sponge/foam instead of Viton Sponge- they are so similiar. They have high temperature resistance, and resistance to fuels. Viton Sponge has certain chemical resistances that fluorosilicone rubber doesn’t have. For example Viton does better with some acids than fluorosilicone sponge. On the opposing end, fluorosilicone sponge has low temperature resistance that Viton Sponge does not.
Chart of Compression Deflection/Thickness Tolerance Below:
| Thickness | Thickness Tolerance | Compression Deflection @ 25% deflection, immediate |
| .125’’ (⅛’’) | +.050’’/-.030’’ | 6.5 psi |
| .250’’ (¼’’) | +/- .060’’ | 5.5 psi |
| .375’’ (⅜’’) | +/- .080’’ | 4.0 psi |
| .500’’ (½’’) | +/- .125’’ | 3.5 psi |
More Information Viton® Sponge
NEDC uses die-cutting, and waterjet cutting machines to manufacture custom gaskets of Viton® Sponge. In addition, this sponge material is available with a number of high-strength acrylic tape backings such as 3M 9485PC, 3M 9472, and others. Viton® Sponge is available in a number of thicknesses. .125’’, .250’’, .375’’ and .500’’. As with many organic rubber sponge polymers, Viton Sponge comes in the typical black color. For more information on Viton Sponge or Mosites #1028 Viton Sponge, please contact sales@nedc.com