Composed of copolymers of acrylonitrile and butadiene, these NBR rubber balls are known for their superior resistance to wear, heat and compression. They are distinguished by their excellent compatibility with plastics, although their resistance to ageing is limited. Ideal for applications requiring precise tolerances, these balls guarantee optimal operation in demanding environments. Marteau-Lemarie, with 40 years of expertise, offers you an immediate availability of this product in stock in France.
Physical characteristics of the NBR rubber ball
| Ownership | Value | Unit |
|---|---|---|
| Density | 1,20/1,40 | g/cm3 |
| Young Module | 3.5 | MPa |
| Thermal expansion coefficient | 170 (T=0-100°C) | × 10−6 /°C |
| Thermal conductivity | 0.25 | W/m·K |
| Electrical resistivity | >10^15 | D·mm2/m |
| Relative magnetic permeability | <~1 | — |
| Magnetic behaviour | Diamagnetic | — |
| Friction coefficient | 0.9 | — |
| Fracture extension | max 700 | % |
| Remanent compression | 25 | % |
Hardness and mechanical resistance of NBR rubber ball
| Ownership | Value | Unit |
|---|---|---|
| Hardness | 75-90 | Shore A |
| Tensile failure load | 15-20 | MPa |
| Tensile failure load | 2,15-2,90 | psix10^3 |
| Exercise temperatures | -15/100 | ° C |
| Exercise temperatures | 5/212 | °F |
Available diameters and grades for NBR rubber ball
| Parameter | Value |
|---|---|
| Minimum diameter | 1 mm — 3/64′′′ |
| Maximum diameter | 152.4 mm — 6′′′ |
| Grades available | III |
Corrosion resistance of NBR rubber ball
The NBR balls are resistant to contact with hydraulic fluids, lubricating oils, transmission fluids, non-polar petroleum products, aliphatic hydrocarbons, mineral fats, many diluted acids, bases and saline solutions at room temperature. They also resist in the air and aqueous environments. They are not resistant to aromatic or chloride hydrocarbons or polar solvents, ozone, ketones, esters and aldehydes.
Applications of NBR rubber ball
Pumps and safety valves (as a leakproof element), pneumatic and hydraulic applications.
Rubber mixtures from 40 Shore A can be supplied.
