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Elasto Proxy's Sealing Solutions Blog Blog

Elasto Proxy's Sealing Solutions Blog

Elasto Proxy's Sealing Solutions Blog is the place for conversation and discussion about the design and custom fabrication of rubber and plastic components. For nearly 25 years, our family-owned company has provided high-quality, low-volume seals to a variety of industries. Doug Sharpe, Elasto Proxy's co-founder, is a former president of the International Sealing Distribution Association (ISD), a not-for-profit trade association that enhances member success through information, education, and interaction. By blogging for CR4 in this same supportive and collaborative spirit, Doug and other members of the Elasto Proxy team will share our experiences with you.

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High-Temperature Textiles for Sealing and Insulation

Posted January 24, 2017 4:55 PM by Doug Sharpe

High-temperature textiles can be custom-fabricated into specialty seals and insulation. Applications include industrial processing equipment and engine exhaust systems. Depending upon the application requirements, high-temperature textiles can also provide resistance to abrasion, chemicals, water, noise, and vibration.

High-Temperature Textiles: Felts and Blankets

Elasto Proxy custom-fabricates two types of high-temperature felts and blankets that are incombustible and asbestos-free. E-glass needled materials can resist temperatures as high as 1200° F. Because E-glass resists vibrations, it’s often used with industrial machinery. Silica textiles are also used to thermally-insulate industrial equipment, but can resist maximum continuous temperatures as high as 1800° F. With its high-temperature resistance, silica is a good choice for engine exhaust systems, too.

Silica-fiberglass composite materials combine the cost-effectiveness of fiberglass with the material properties of silica fiber. Applications include stress relief blankets and thermal insulation for processing equipment and engine exhaust systems. Because silica-fiberglass is durable, it can support applications where removable or reusable textiles are required. With our industrial sewing capabilities, Elasto Proxy can attach straps that make it easy to install and remove your custom-fabricated products.

High-Temperature Textiles: Treated Fabrics

Elasto Proxy also converts high-temperature fabrics. For insulation jacketing, silicone-coated fiberglass fabrics are a good choice. In addition to high-temperature resistance, these materials provide abrasion resistance and waterproof sealing. For chemical resistance, PTFE-coated fiberglass fabrics are used. PTFE, a synthetic fluoropolymer, is chemically inert against most acids and bases.

High-temperature fabrics also include silica, aluminized fiberglass, and stainless knitted blankets. Silica fabrics that are made of high-purity, non-respirable silica yarns can have a useful tensile strength to 1800° F and a melt point of 3000° F. Aluminized fiberglass fabrics provide an excellent vapor barrier against moisture and other fluids. They consist of aluminum foils and films that are laminated to fiberglass fabrics. Stainless knitted blankets contain thin but strong strands of stainless steel wire.

Two Examples of High-Temperature Solutions

Graphite gaskets from Elasto Proxy provide an example of how high-temperature textiles offer numerous advantages. Unlike other types of gasket materials, graphite’s mechanical properties increase with temperature. In multi-layer components, graphite can be sandwiched together with other gasketing materials (such as foils) to create custom sealing and insulation solutions. Graphite is also flexible and can be produced without fillers or binders that can limit sealing performance in demanding applications.

Heat blankets from Elasto Proxy also demonstrate our custom fabrication capabilities with high-temperature textiles. These exhaust blankets consist of silicone-coated fiberglass fabric, specialized cloth, and high-temperature thread made of Kevlar or fiberglass. Some products feature snaps, but others use Velcro for a fully non-metallic solution that won’t rust. The built-in fasteners that we provide are easy-to-attach and hold securely in place, but are also convenient to detach when engine maintenance is required.

Technical Design and Custom Fabrication

Elasto Proxy specializes in low-to-medium volume quantities of custom seals and insulation. The industries we serve include aerospace, defense, medical and healthcare, mobile equipment, and stainless steel and food equipment. At our world headquarters near Montreal, Quebec, Canada, we convert materials cost-effectively and create unique solutions from rubber, plastic, foams, films, textiles, and other materials. With warehouses in Canada and the U.S., we can also store your products and ship them to you.

To learn more about Elasto Proxy’s capabilities and how can help you, download our e-book: Technical Design and Custom Fabrication Capabilities.


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