Material Highlight: Closed Cell Sponge Rubber
Closed cell sponge rubber. Enticing subject, isn’t it? I can assure you it is a lot more interesting than it sounds. SRP does a ton of work with closed cell sponge because it is a highly convertible material that is incredibly easy to work with. So, we thought we would share a few facts and specifications to help aid some folks when it comes to choosing the right materials. This could be the right one for you.
Closed cell sponge rubber is defined as a product whose cells are completely enclosed by its walls without interconnecting with other cells. This unique physical property enables closed cell rubber to function as an excellent seal for moisture, dust, air, gas, smoke, noise, liquids, oil and the list goes on.Â
Closed cell sponge offers cost effective gasketing and sealing solutions for a wide variety of applications including: automotive gaskets, lighting gaskets, door frame gaskets, window gaskets, enclosure gaskets, appliance gaskets, telecommunications cabinet gaskets, weather stripping, and gap fillers. These types of sponge are extremely impermeable to water, and good choices for shock absorption, weather sealing and thermal barriers. Pressure Sensitive Adhesive can be applied to all closed cell sponge materials.
Listed below are the various types of closed cell sponge:
Closed Cell Neoprene Sponge Rubber
Available Thickness: 1/16” – 1”
Available Density: Soft to Firm
Temperature Range: -40°F to 150°F
Flammability Specs: FMVSS-302, UL 94 HF-1 (SCE43NEO Only)
Color: Black
Closed cell neoprene sponge products will resist light, oil contact, ozone, alkalis and acids, making them ideal for various types of enclosure gaskets.
Data Sheets: SCE41NEO, SCE42NEO, SCE43NEO
Closed Cell Neoprene/EPDM/SBR Blend Sponge Rubber
Available Thickness: 1/16” – 1”
Available Density: Soft to Firm
Temperature Range: -40°F to 200°F
Flammability Specs: FMVSS-302, UL 94 HF-1
Color: Black
This closed cell sponge is produced from a Neoprene/EPDM/SBR blend, and is used to make a general-purpose gasket for a variety of applications, including commercial. This blend is not as resistant to oils and liquids compared to the neoprene sponge.
Data Sheets: SCE41B, SCE42B, SCE43B, SCE45B
Closed Cell EPDM Blend Sponge Rubber
Available Thickness: 1/16” – 1”
Available Density: Soft to Firm
Temperature Range: -40°F to 200°F
Flammability Specs: FMVSS-302
Color: Black
Closed cell EPDM blend sponge materials are great for outdoor applications, and have excellent resistance to alkalis, acids, ozone, and oxidization. However, this EPDM blend sponge has poor resistance to oil and gasoline.
Data Sheets: RE41E, RE42E, RE43E, RE45E
Closed Cell ECH Sponge Rubber
Available Thickness: 1/16” – 1”
Available Density: 15 pcf
Temperature Range: -40°F to 325°F
Flammability Specs: FMVSS-302
Color: Black
Epichlorohydrin’s (ECH) primary characteristics are resistance to swell when exposed to fuel and high temperatures. ECH also has very good resistance to weather, ozone, sunlight, and oxidation.
Data Sheets: C41ECH, C42ECH
Ensolite Neoprene/PVC/Nitrile Blend
Available Thickness: 1/16” – 1”
Available Density: Soft to Firm
Temperature Range: -40°F to 200°F
Flammability Specs: FMVSS-302, FAR 25.853, UL 94 HF-1, UL94 V0, V1
Color: Black
Ensolite is a blend of PVC/Nitrile/Neoprene material manufactured by Armacell LLC. This premier, high-performance, elastomeric closed-cell foam is engineered to meet specific design considerations for fabricated products.
Data Sheets: ENSOLITE IV1, ENSOLITE IV2, ENSOLITE IV3
If you have any questions or inquiries concerning closed cell sponge, please do not hesitate to call us at 847-593-5630, or email us at info@srpco.com. We will be happy to answer any questions you may have, or assist you in assuring you are choosing the right materials.
Next month we will highlight a very distant relative of closed cell sponge, open cell sponge.
Until next time,
Team SRP
