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.
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) |
|
Open 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.
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