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.
 

Available Colors:*
Red, Blue, White, Green, Yellow, Orange
* Exact color shades cannot be guaranteed. Slight variances may occur from master batch to master batch.
 
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%
Sizes (diameter) 
Nominal (in.) 
Actual (mm) 
3/4
20
1 1/8 
28
1 3/8 
35
1 7/8 
48
2
50
2 1/4 
56
2 3/8 
60
2 1/2 
63
2 3/4 
70
3
75
 
RubberMill • 9897 Old Liberty Road • Post Office Box 1329 • Liberty, NC 27298
Phone: 336-622-1680 • Fax: 336-622-1685
info@rubbermill.com
  
 
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