In the short time I have been at NEDC, I have been witness to the increasing demands of the aerospace and military applications that we service. Some of the common topics that we discuss in applications are the fluid(s) & temperature(s) that the application may be witness to. That discussion oftentimes leads into fluid resistance, especially to aggressive fuels that are commonplace in such applications. When we learn of fuels being present, a common material that is often considered is fluorosilicone rubber. When compression is also required, fluorosilicone sponge is often utilized.
What is Fluorosilicone Sponge?
Fluorosilicone sponge is simply fluorosilicone rubber expanded to be a cellular material. When expanded, fluorosilicone now has both the great fluid resistance and ease of compression. Fluorosilicone sponge is similiar to silicone sponge in a lot of ways. Some similarities with silicone sponge include high temperature resistance, great weatherability, low compression set, and low water absorption. One example of a commercially available fluorosilicone sponge is Norseal® R10490 by Saint Gobain Performance Plastics. R10490 can be certified to AMS-3323 and MIL-R-6130, Type 2 Grade A. Fluorosilicone sponge is utilized in highly demanding applications that are produced by the aerospace and military markets, such as high-performance gasketing and cushion pads. The standard color of fluorosilicone sponge is blue. The standard finish available on the sponge is a fabric finish.
Fluorosilicone sponge is available in gauges ranging from .032” to .125” in thickness. Anytime something thicker is required, plys of sponge may be necessary. In addition, NEDC fabricates fluorosilicone sponge extrusions. NEDC commonly applies acrylic/silicone PSAs to different sponge products. These materials can be die-cut or waterjet-cut in custom shapes with NEDC’s assortment of machines. For more information on fluorosilicone sponge, or if you believe you may have an application that necessitates this material, please contact firstname.lastname@example.org.
Norseal® is a registered trademark of Saint Gobain.