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MB:2 İş Merkezi No:160/1
Esenyurt İstanbul
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Aslan Kaucuk


  • Product Description
    Closed cell sponge rubber can be formulated into several different elastomeric materials in a variety of densities. The most common materials are Neoprene/EPDM/SBR blend, Neoprene, EPDM, and Silicone. Sponge rubber can be specified in low, medium, or high density firmnesses. It is a highly flexible material that can adapt to seal almost any surface application when used with pressure sensitive adhesives or with Heat Activated Tape Systems (HATS). Sponge rubber is a closed cell material that delivers:

    • Controlled compression and recovery characteristics
    • Shock absorption attributes
    • Highly effective sealing capabilities

    Closed cell sponge rubber, or expanded rubber, is composed of individual cells that are a lot like balloons; they hold in gas and do not allow moisture to penetrate their walls so long as the cell walls do not burst. The cells in closed cell sponge rubbers are not interconnecting, meaning they do not allow air or water to wick through the sponge at low pressures.

    The cell walls of sponge rubber can be compromised in the following ways.

    • Constant deflection can cause gas to permeate through the cell walls
    • If compressed beyond 50-70% deflection, the closed sponge cells may burst

    Raw compounds of sponge rubber parts are mixed on the same type of equipment as solid rubber compounds with the addition of a chemical blowing agent. As a chemical additive, the blowing agent decomposes and mixes with the rubber compound to generate nitrogen gas under the heat and pressure of the pre-cure and pre-forming process. As this reaction takes place, the mixed batch of sponge rubber is placed into an oven where it then expands into a bun. Following this, the bun is aged and split into individual sheets.

    Sponge rubber parts can be formulated from a variety of materials.

    • Closed Cell Silicone Sponge Rubber
    • Closed Cell EPDM Sponge Rubber
    • Closed Cell Neoprene Sponge Rubber
    • Blended Closed Cell Sponge Rubber