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/cub.in.
Specific Gravity
1.26
Size Range:
Imperial
3/16" to 7/8" inclusive
Metric
4mm to 30mm to inclusive
Tolerances:
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.
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