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/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.