Silicone Sponge Rubber Products, Gaskets
Silicone sponge products are a core product group of Stockwell Elastomerics, Inc. Stockwell Elastomerics inventories and fabricates the full product line of Saint-Gobain Cohrlastic® closed cell silicone sponge materials, including products with low compression set properties, UL 94HB, UL 94V-0 flame ratings, thermal conductivity, fluid and fuel resistant fluorosilicone and general purpose silicone sponges. Stockwell Elastomerics applies a variety of pressure sensitive, acrylic and silicone, adhesive backings. Additionally, Stockwell regularly applies a conductive surface coating to silicone sponge where soft sponge is needed in combination with ESD protection.
Silicone sponge and silicone rubber sheet are readily fabricated into silicone sponge gaskets and cushioning pads. Fabricating processes include: die cutting, water jet cutting, adhesive lamination and strip slitting. Stockwell offers cut-to-size (waterjet) prototypes to help engineers and designers with “proof of concept”.
Closed Cell Silicone Sponges
Silicone Materials Selection Guide
Silicone sponge products are available in tape form, also called strip gasket or Strip-N-Stick®. These silicone gasket tapes are supplied with a premium, peel-and-stick, acrylic adhesive backing. A silicone adhesive backing is also available for extreme temperature applications. Silicone gasket tapes are most commonly used for enclosure gaskets. View more information on silicone sponge gasket tapes offered by Stockwell Elastomerics.
Silicone Sponge or Silicone Foam? What is the difference?
Silicone sponge, or closed cell silicone sponge, is derived from a thin sheet of uncured silicone gum that expands to a controlled thickness while curing in a high temperature press or rotocure operation. Closed cell means that the cells are non-interconnecting, therefore they do not allowing water to wick through the sponge. Generally, silicone sponges have superior mechanical properties and are considered to have a complete closed cell structure. Silicone sponge often provides better water sealing in wash-down applications as compared to silicone foam.Silicone foam is normally considered to be an open cell, lightweight product that is derived from liquid silicone ingredients that are cast onto a liner and cured in an oven. Higher density silicone foams have been developed, in recent years, that are suitable for water sealing. The low density open cell silicone foam can allow moisture to pass through unless the design allows for extensive deflection of the gasket. The higher density silicone foam products are actually composed of many closed cells. With proper compression, it is possible to achieve a very good water seal with silicone foam.
Why Use Silicone Sponge Rubber?
Many silicone sponge materials meet AMS3195, AMS3196, MIL-R-46089, MIL-R-6130C and ASTM D6576. UL 94V-0 flame rated silicone sponge is available. Also see our Silicone Foam products for UL 94V-0 requirements.
Specifications met by Silicone Sponge Materials
Many silicone sponge materials meet AMS3195, AMS3196, MIL-R-46089, MIL-R-6130C and ASTM D6576. UL 94V-0 flame rated silicone sponge is available. Also see our Silicone Foam materials for UL 94V-0 requirements.
Silicon Sponge or Silicone Sponge?
Although silicon sponge or silicon is called out frequently called out on drawings, silicone sponge is the widely accepted terminology used in the rubber industry.
Contact Stockwell Elastomerics, Inc. for Silicone Sponge
Contact Us for further assistance with silicone sponge gaskets and other silicone sponge rubber products.
Silicone MaterialsDownload Silicone Materials Selection Guide (PDF)
Go to Silicone Materials Overview page
Download Data SheetsView Data Sheets (PDFs)
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