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Western Rubber & Supply, Inc. Since 1976

Silicone Sponge

WesLastomer™ Silicone Sponge is an excellent material for custom gasketing and padding applications that require a soft, compressible material. The closed and partially-open cells of these sponges prevent water absorption. For your applications, these materials also provide the ozone, weather and UV resistance typical of silicone.

With extremely fast turnaround using our state-of-the-art in-house manufacturing processes, we convert our extensive line of silicone, open cell or closed cell sponge to your exact specifications.  We have over 40 years of established team-to-team handoff in place, assuring total quality every step of the way.  Once you have selected the material, we’ll fabricate the material into a finished part.  The next step - submit your drawing or your RFQ.

Western Rubber & Supply, Inc. WesLastomer™ Silicone Sponge.

Please note:  

We are a custom manufacturer and do not stock or offer raw materials for direct sale.

Product

Best For

Applications

Features & Benefits

Material Specs

 

Grade 4300 Soft Density Closed Cell Silicone Sponge

*Applications where soft, compressible material is needed, in addition to extreme temperatures and water resistance.

*High & low temperatures environments

*Outdoors

*Electrical insulation

*Enclosure gaskets

*Sealing

*Cushioning

*Extreme temperature resistance

*Ozone resistance

*High compressibility

*Good compression set characteristics

*Radiation resistance

*Vibration isolation

*Mechanical resilience

*-103 to +450°F

Grade 4500 Firm Density Closed Cell Silicone Sponge

*Applications where soft, compressible material is needed, in addition to extreme temperatures and water resistance.

*High & low temperatures environments

*Outdoors

*Enclosure gaskets

*Sealing

*Cushioning

*Extreme temperature resistance

*Ozone resistance

*High compressibility

*Good compression set characteristics

*Radiation resistance

*Vibration isolation

*Mechanical resilience

*-103 to +450°F

Grade 4400 Medium Density Closed Cell Silicone Sponge

*Applications where soft, compressible material is needed, in addition to extreme temperatures and water resistance.

*High & low temperatures environments

*Outdoors

*Enclosure gaskets

*Sealing

*Cushioning

*Extreme temperature resistance

*Ozone resistance

*High compressibility

*Good compression set characteristics

*Radiation resistance

*Vibration isolation

*Mechanical resilience

*-103 to +450°F

Grade 4500 Firm Density Closed Cell Silicone Sponge

*Applications where soft, compressible material is needed, in addition to extreme temperatures and water resistance.

*High & low temperatures environments

*Outdoors

*Enclosure gaskets

*Sealing

*Cushioning

*Extreme temperature resistance

*Ozone resistance

*High compressibility

*Good compression set characteristics

*Radiation resistance

*Vibration isolation

*Mechanical resilience

*-103 to +450°F

Grade 4600 Extra Firm Closed Cell Sponge

*Applications where soft, compressible material is needed, in addition to extreme temperatures and water resistance.

*High & low temperatures environments

*Outdoors

*Enclosure gaskets

*Sealing

*Cushioning

*Extreme temperature resistance

*Ozone resistance

*High compressibility

*Good compression set characteristics

*Radiation resistance

*Vibration isolation

*Mechanical resilience

*-103 to +450°F

Grade 4700 “OpenCell” Silicone Foam

*Performance applications where superior weather resistance is required in addition to high and low temperature resistance.  Is non-toxic, non-flammable, very light in weight and exhibits virtually no outgassing.

*Outdoor enclosure seals

*Insulation

*Gaskets

*Vibration isolation

*Extreme temperature resistance

*Ozone resistance

*High compressibility

*Good compression set characteristics

*Radiation resistance

*Mechanical resilience

*HIgh compressibility

*Thermal Conductivity -

0.39 BTU in/hr/ft2°F

*Flame Resistance -

Listed V-0 and HF-1

*Flame Spread -

<35

 

 

 

 

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