Sponge Rubber Balls
RubberMill’s chemically blown sponge balls are molded from a premium grade natural rubber compound. Our molding process ensures uniform cell structure, excellent physical properties, good colorability, and smooth skinned surfaces.
Typical Uses for Sponge Rubber Balls:
Exercise equipment, medical apparatus, toys, flotation and novelty.
Sponge Rubber Ball Properties & Sizes
Sizes (diameter)
| Nominal (in.) | Actual (mm) |
|---|---|
| 1 1/8 | 28 |
| 1 3/8 | 35 |
| 2 | 50 |
| 2 1/4 | 56 |
| 2 1/2 | 63 |
| 2 3/4 | 70 |
Properties
| Material: | Natural Rubber |
| Hardness: | 70 +/– 5 (Shore00) |
| Tolerance: | +/– .040 in. |
| Density: | 25.0 lb/cu.ft. |
| Rebound: | 40% |
| Tensile Strength: | 140 psi |
| Elongation: | 480% |
Stock vs. Custom
Other sizes, compounds, and colors are available as custom orders.
Contact a RubberMill Customer Service Representative for more information.
