Precision Balls

Polyurethane Balls

Polyurethane Balls

General Information:
The main application for Polyurethane Balls is in non-return valves where the natural resilience and compliant qualities of the material help to ensure a good seal.
Basic Composition:
Polyurethane Elastomer
Mechanical Properties  
Hardness 85 - 90 Shore 'A'
Density 0.045 lbs/
Specific Gravity 1.26
Size Range:  
Imperial 3/16" to 7/8" inclusive
Metric 4mm to 30mm to inclusive
  Up to 3/8" over 3/8" to 7/8" over 7/8"
Basic Dia.Tolerance ±.006" ±.006" ±.006"
Sphericity .0025" .004" .006"
Surface finish Smooth and seam-free
Corrosion Resistance:
Polyurethane has excellent resistance to commercial fuels and lubricants. (Additives may have adverse affects under unfavourable conditions). It is not suitable for use in acid or alkaline solutions.

ISO 9001:2000

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Silicon Carbide
Polycarbonate Resin
Acetal Resin
Carpenter 20 Cb-3
M-50 High Speed Steel Cubic Zirconia
Silicon Nitride
Optical Quality Glass