Silicone sponge extrusion is the process of producing a continuous length of silicone sponge material with a specific shape and cross-sectional profile. The extrusion process involves forcing a pre-formed silicone sponge compound through a specially designed die using high pressure and temperature. As the material is extruded through the die, it takes on the shape and size of the die opening, forming a continuous length of sponge material.

Silicone sponge extrusions can be produced in a variety of shapes and sizes, including round, rectangular, square, and custom profiles. They can also be produced with various densities and durometers to meet specific application requirements. Silicone sponge extrusions offer many benefits, including excellent temperature resistance, good compression set and recovery properties, and resistance to weathering and UV exposure.

Common applications for silicone sponge extrusions include gaskets, seals, and insulation for a wide range of industries, including automotive, aerospace, electrical, and medical. The ability to produce custom profiles and shapes makes silicone sponge extrusions a versatile option for a wide variety of applications.

Silicone sponge extrusions offer excellent chemical resistance to a wide range of chemicals and fluids, including acids, alkalis, solvents, oils, and fuels. They are also resistant to ozone, UV radiation, and weathering, which makes them suitable for outdoor applications. Silicone sponge extrusions are non-reactive, which means that they will not react or corrode when exposed to most chemicals or fluids.

In addition to their chemical resistance, silicone sponge extrusions also offer good temperature resistance, with some materials able to withstand temperatures from -50°C to 200°C (-58°F to 392°F). They also have good compression set and recovery properties, which means they can maintain their shape and compressibility even after repeated compression and decompression cycles.

Overall, silicone sponge extrusions are an excellent choice for applications where chemical resistance, temperature resistance, and durability are required, such as gaskets, seals, and insulation for the automotive, aerospace, electrical, and medical industries.

The process of joining silicone sponge extrusions involves using a suitable adhesive to bond two or more extruded sections of silicone sponge material together. The adhesive used will depend on the specific application requirements, as well as the type and properties of the silicone sponge material being joined. Overall, joining silicone sponge extrusions requires careful surface preparation, the use of a suitable adhesive, and proper clamping and curing to ensure a strong and durable bond.