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Square Silicone Foam Extruded Strip — Premium Silicone Foam Seal Strip

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Square Silicone Foam Extruded Strip

Square Silicone Foam Extruded Strip

Item No. SP-019

Square silicone foam extruded strip, also known as silicone foam seal strip, is extruded sponge silicone product with micro‑porous inner structure. Flexible and durable, it delivers reliable sealing, cushioning, high‑temperature resistance and electrical insulation.Widely used in daily‑life and industrial scenarios including chemical equipment, transportation, telecommunication, electrical instruments and medical devices for sealing, shock absorption and thermal insulation.


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  • OVERVIEW
  • SPECIFICATIONS
  • PACKAGE
  • FAQS

Main Application Fields

  1. Transportation Industry

Used as shock‑absorbing components and hydraulic system seals. Applied for automobile brakes, exhaust shaft seals, spark plugs, ignition wire protection and other sealing positions.

  1. Telecommunication & Radio Industry

    Thanks to outstanding insulation performance, it is used for equipment housing sealing, insulating sleeves, switch protective covers and other insulation‑related applications.

  2. Instrument & Electrical Equipment

    Protection for instrument wiring, defrosting wires, heating wires; sealing for refrigeration units and silicone hose assemblies for insulation & sealing purpose.

  3. Other Applications

    Medical equipment, large chemical facilities and consumer appliances for dust‑proof, heat‑insulation and cushion sealing.


Key Material & Performance Advantages

  1. Superior Temperature Tolerance: Silicone foam strip maintains stable physical properties under wide‑range temperature fluctuation, suitable for high‑heat working positions as well as low‑temperature environments.

  2. Reliable Electrical Insulation: Great dielectric property makes it an ideal candidate for electrical isolation applications, preventing short‑circuit risk for wires and electrical components.

  3. Outstanding Compression Resilience: The sponge micro‑cell structure allows the strip to compress under pressure and bounce back effectively, maintaining stable sealing effect even under long‑term squeezing.

  4. Strong Anti‑Aging & Ozone Resistance: Resists ultraviolet ray, ozone and atmospheric aging, delivering long service life for outdoor and equipment‑built‑in usage.

  5. Multi‑function Integration: Realizes sealing, shock absorption, noise reduction and thermal insulation in one single part, helps customers simplify component design.


  • Product Name

    Square Silicone Foam Extruded Strip / Silicone Foam Seal Strip

  • Manufacturing Process

    Extrusion foaming

  • Material

    Industrial / Food‑grade silicone rubber

  • Cross‑section

    Square, custom rectangular & special profiles available

  • Color

    Red, white, custom colors upon request

  • Key Properties

    Micro‑porous sponge structure, high elasticity, wide temperature resistance, good electrical insulation, shock‑absorbing, dust‑sealing, anti‑aging

  • Processing:

    Custom length, custom cross‑section dimension

Complete Pallet Preparation for rubber extrusions
Complete Pallet Preparation for rubber extrusions

Standardized Pallets: Goods are stacked on heat-treated (ISPM 15) or plastic pallets, optimized for forklift handling. Rigid Corner Protectors: High-impact cardboard corner guards are applied to the full height of the stack. This prevents the straps from cutting into the rubber and maintains the vertical integrity of the pallet.

Standard package for rubber extrusion
Standard package for rubber extrusion

Standard Rolls: Goods are typically supplied in 50m or 100m continuous rolls, precision-coiled to maintain the profile’s structural shape.

What are the main advantages of silicone foam seal strip?

It features wide temperature tolerance, great electrical insulation. Its sponge porous structure provides excellent cushioning, shock absorption and sealing performance with long service life.

Can I get custom cross‑section sizes?

Yes. Square profile is standard, rectangular and special‑shaped extrusions are available. Custom dimensions, length and colors are supported.

What is the difference between foam silicone strip and solid silicone strip?

Foam silicone has inner porous sponge structure, softer with better cushioning effect. Solid silicone is denser, harder and offers higher compression resistance.

Can silicone foam strip be used on automobiles?

Yes. It is widely used for sealing and shock absorption for automobile brake systems, exhaust systems and wiring parts.

Is small‑batch custom order acceptable?

Yes. We provide custom service according to your working‑condition requirements.

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