elongation at break to 500%,Akron abrasion loss to 0.01c.cm. per 1.61Km,tear strength to 90KN/m,brittleness temp. to -50 degree Polyurethane cupIt is essential parts of pipeline pigs, used for cleaning/ removing the rust,impurity in the pipeline.Elongation at break to 500%,Akron abrasion loss to 0.01c.cm. per 1.61Km,Tear strength to 90KN/m,Brittleness temp. to -50 degreeShore hardness: 85A