Materials:Sponge Rubber

Sponge Rubber Materials

Sponge Rubber - Open Cell

Elastomer Color Durometer Range Tensile Strength Range (psi) Temperature Range (Fahrenheit) Elongation Thickness Range (inches)
Open Cell Black Low - high 30-175 -20° to +160° 100%-200% 0.0625 - 2

Open cell sponge rubber is calendered and injected with gas to make it cellular. Most open cell is natural rubber and is a great cushioning material that can compress and recover quickly. It has low pressure sealing against gases and is weather resistant.

Open cell sponge rubber can be made of silicone or other polymers such as neoprene, EPDM, nitrile, etc. and is manufactured in rolls. Exact open cell sponge rubber properties depend upon the type of polymer used.

Closed Cell Neoprene Sponge Tube Sleeve

Open Cell Sponge Laminated with White FDA Nitrile Scaling Strip

Properties of Open Cell Sponge Rubber

  • Flexibility Retained in Low Temps
  • Resilient
  • Resistance to Acids & Bases, Light Oil Contact, Ozone, Oxidation, Moisture, Some Sunlight

Typical Applications for Open Cell Sponge Rubber

  • Die-cut Parts
  • Rubber Gaskets and Seals
  • Insulating and Weather-stripping
  • Shock Absorption, Cushioning
  • Sound-Proofing
  • Vibration Dampening
  • Thermal Insulation
  • Filtering

Sponge Rubber - Closed Cell

(Expanded Sponge Rubber)
Elastomer Color Durometer Range Tensile Strength Range (psi) Temperature Range (Fahrenheit) Elongation Thickness Range (inches)
Closed Cell Black/Gray Low, med.,
high density
30-175 -70° to +275° 100%-200% 0.0625 - 2

Closed cell sponge is made in buns (gas expanded) and cut to thickness. Most closed cell sponge is neoprene or neoprene blend and is an ideal medium for protection in uses to prevent water or air from passing from one area to another at low pressures. It has high flexibility and compression capabilities and can conform to and seal most surfaces.

Closed cell sponge rubber can be made of silicone or other polymers such as neoprene, EPDM, nitrile, etc. and is made in relatively small 42 inch x 72 inch sheets. Exact properties depend upon the type of polymer used. The closed cells are expanded with nitrogen gas which is generated during forming and/or curing.

PE Foam Tool Holder

Solid Silicone Extrusion

EPDM Sponge

Properties of Closed Cell Sponge Rubber

  • Flexibility Retained in Low Temps
  • Resilient
  • Resistance to - Acids & Bases, Light Oil Contact, Ozone, Oxidation, Moisture, Some Sunlight

Typical Applications for Closed Cell Sponge Rubber

  • Die-cut Parts
  • Rubber Gaskets and Seals
  • Insulating and Weather-stripping
  • Shock Absorption, Cushioning
  • Sound-Proofing
  • Vibration Dampening
  • Thermal Insulation
  • Filtering