Standard and Custom Rubber Balls

For over 60 years, Hawthorne Rubber Manufacturing Corporation has been a supplier of both standard and precision custom molded rubber balls to the exact specifications of OEM, industrial, laboratory and engineering development groups.

Some of the standard ball sizes are listed below. They are manufactured in many different materials in a wide range of durometer hardnesses.

Standard Ball Sizes

P/N
Diameter
Material
Durometer
 Comment
B-.276

.276"
Any Rubber
Any Durometer
 7 mm Diameter
B-1/2

1/2"
Any Rubber
Any Durometer
B-5/8

5/8"
Any Rubber
Any Durometer
B-.787

.787"
Any Rubber
Any Durometer
 20 mm Diameter
B-1

1"
Any Rubber
Any Durometer
B-1 3/8

1 3/8"
Any Rubber
Any Durometer
B-1 5/8

1 5/8"
Any Rubber
Any Durometer
B-1 7/8

1 7/8"
Any Rubber
Any Durometer
B-2

2"
Any Rubber
Any Durometer
B-2 5/8

2 5/8"
Any Rubber
Any Durometer
B-3 5/16

3 5/16"
Any Rubber
Any Durometer
B-3 1/2

3 1/2"
Any Rubber
Any Durometer
B-5 1/8

5 1/8"
Any Rubber
Any Durometer
B-7/8 SI-70 FDA_W

7/8"
Silicone

70
Translucent White, FDA rubber
B-1 1/8 SI-70 FDA_W

1 1/8"
Silicone

70
Translucent White, FDA rubber
B-1 1/8 NR-50 FDA_W

1 1/8"
Pure Gum

50
White colored, FDA rubber
B-1 1/8 BC-55 FDA_W

1 1/8"
Neoprene

55
White colored, FDA rubber
B-3/4 UR-95

3/4"
Polyurethane

95
Amber colored rubber
B-1 UR-95

1"
Polyurethane

95
Amber colored rubber
B-1 1/2 UR-95

1 1/2"
Polyurethane

95
Black colored rubber
B-2 UR-95

2"
Polyurethane

95
Black colored rubber
B-2 1/2 UR-95

2 1/2"
Polyurethane

95
Black colored rubber
B-3 UR-95

3"
Polyurethane

95
Black colored rubber
B-3 1/2 UR-95

3 1/2"
Polyurethane

95
Black colored rubber
B-4 UR-95

4"
Polyurethane

95
Black colored rubber
B-4 1/2 UR-95

4 1/2"
Polyurethane

95
Black colored rubber
B-5 UR-95

5"
Polyurethane

95
Black colored rubber

The above table dimensions are reference dimensions. Actual dimensions vary based on the material being used. Actual dimensions will be supplied upon request.

Online Request For Quotation Form.

If you don't see the ball size you are looking for or you need a special core insert like wood or steel, just ask us and we will quote you in it. We supply both standard and custom balls in a wide range of materials, including Fluorocarbon (both Fluorel and Viton®), Fluorosilicone, Silicone, Urethane, Nitrile, Neoprene, EPR, SBR, and Natural Rubber. We mold balls in translucent, colored or black rubber. Some compounds can conduct electricity, or be used in FDA, dental, or pharmaceutical applications.