OPEN CELL SPONGE
Grand Rapid’s Rubber supplies KUSHON® open cellular rubber based predominantly on natural rubber.
Used worldwide in a variety of industries: automotive, protective and promotional matting, carpet underpad, footwear and die ejection. KUSHON is the go-to product for designers. Our products are available as roll and sheet goods in multiple thickness and width options to suit your specific needs.

FEATURES
- ANTI-SLIP: Natural rubber is inherently anti-slip with a high coefficient of friction.
- BROAD RANGE OF CONSTRUCTIONS: Can be laminated with a broad range of materials including textiles and cork.
- BROAD RANGE OF THICKNESS: Select products are available in thicknesses as low as 0.040” and as high as 1” depending upon grade.
- ELECTROSTATICALLY DISSIPATIVE: Select grades are electrostatically dissipative.
- FLEXIBLE FORMATS: Product can be supplied as either roll goods or sheet goods.
- TOUGH AND DURABLE: Extremely resistant to abrasion and tearing.
Technical Data

OPEN CELL SPONGE
ASTM | Description | Value |
---|---|---|
Standard Color | Black | |
Polymer | Natural Rubber | |
D1056 | Density (Average), lb./cubic ft | 26 |
Compression Deflection (psi) at 25% deflection | 5-10 | |
Compression Deflection Change after Oven Aging, (%) | 168 hrs @ 158°F: '+/- 20 | |
Compression Set (% max) | 50% deflection @ 158°F: 15 | |
Temperature Range | -20°F to 160°F |
Item Number | Color | Thickness Inches | Width Inches |
---|---|---|---|
GD22011000 | Black | 1/16 | 36 |
GD22011050 | Black | 3/16 | 36 |
GD22011100 | Black | 3/8 | 36 |
GD22011200 | Black | 1 | 36 |